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What is Thulium?

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Periodic table of chemical elements is an arrangement of elements in the form of rows (period) and columns (Group). They are arranged with respect to their atomic numbers and similar characteristics. Thulium In Periodic Table </>
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It’s an atomic symbol of Thulium which helps identifying it in periodic table. Symbol
Tm
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Group number of Metals is vertical column number in periodic table. Group Number
Not Available
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Period number is a horizontal row number of Metals in periodic table. Period Number
6
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Periodic table is subdivided into 4 blocks i.e p-block, d-block, s-block and f-block. Block
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The f-block is in the center-left of a 32-column periodic table but in the footnoted appendage of 18-column tables. These elements are not generally considered as part of any group. They are often called inner transition metals.f block
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Metals belongs to the subcategory of periodic table. Different element families exist in this table. For example, Alkali metals, Transition metals, alkaline earth metals, post-transition metals, Lanthanide & Actinide series metals. Element Family
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Total 15 metals are included in Lanthanide series from Lanthanum to Lutetium. Lanthanide series is located under f and d block of the periodic table.Lanthanide
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The Chemical Abstract Service (CAS) is part of the American Chemical Society and maintains a database of chemical compounds and sequences. and each element has its unique identification number known as CAS number. CAS Number
7440304
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51
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The crystallographic or Fedorov groups, and represent a description of the symmetry of the crystal. Space Group Name
P63/mmc
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The crystallographic or Fedorov groups, and represent a description of thesymmetry of the crystal. Space Group Number
194.00
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5
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Want to know Interesting and lesser known facts about Thulium, then you are at the right place. Facts about Thulium </>
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Bunch of Interesting facts about Thulium. Interesting Facts
  • Thulium metal can resist corrosion due to dry air .
  • Only Tm-169 isotope of Thulium metal occur naturally.
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List of different sources of Thulium. Sources
  • Found in Minerals
  • Mining
  • Ores of Minerals
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Lets check out the facts about history of Thulium. History of Thulium
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You might be wondering who discovered Thulium metal? Who Discovered Thulium
Per Teodor Cleve
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Thulium metal’s discovery period. Because we think most of the metals are discovered by our ant-sisters but is it really true? Let’s Find out then! Discovery
In 1879
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Abundance percentage of Thulium metal at various places. This will give you an idea about its Abundance levels. Abundance of Thulium
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Abundance percentage of Thulium in Universe. Abundance In Universe
0.00 %
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30
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Abundance percentage of Thulium in Sun. Abundance In Sun
0.00 %
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29
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Abundance percentage of Thulium in Meteorites. Abundance In Meteorites
0.00 %
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47
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Abundance percentage of Thulium in Earth’s Crust. Abundance In Earth’s Crust
0.00 %
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43
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Abundance percentage of Thulium in Oceans. Abundance In Oceans
0.00 %
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41
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Different types of Thulium Uses and benefits are listed down below. Uses of Thulium </>
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Uses & Benefits Uses & Benefits
  • Thulium metal produces isotopes that emits X-rays. This isotope is used in X-ray machine.
  • Thulium element is also used in Surgical equipment like laser.
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List of industrial uses of Thulium. Industrial Uses
NA
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List of medical uses of Thulium. Medical Uses
NA
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List of lesser known uses of Thulium metal. Other Uses
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    An alloy is a mixture of metals or a mixture of a metal and another element. Alloys of this metals are very useful.Alloys
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    This is a radioactive metal. Mostly radioactive metals are used in nuclear research projects.Nuclear Research
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    This is a synthetic metal. Mostly synthetic metals are used in research purpose.Research Purposes
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Biological properties of Thulium. Biological Properties
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Toxicity level of Thulium metal. Toxicity
Unknown
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Whether Thulium metal is present in the Human Body? Present in Human Body
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Physical properties or characteristics of Thulium. These properties are mostly related to its appearance and surface. Physical Properties of Thulium </>
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The temperature at which Metals metal starts melting. Melting Point
1,545.00 °C
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23
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The temperature at which Metals starts boiling. Not literally it is a temperature point at which it converts to vapors. Boiling Point
1,730.00 °C
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55
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Physical appearance or look and feel of Thulium is described here. Appearance of Thulium
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Physical state or phase of Thulium at room temperature. Physical State
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At room temperature almost all metal are found in solid physical sate but only the mercury element found in liquid state.Solid
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One might wonder, what is the exact color of Thulium metal in nature? Color
Silvery Gray
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Metals generally exhibit a metallic luster! Lets check out the look and feel of Thulium metal. Luster
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Metals are hard/soft and have different type of luster. Here we present you a list metals and these metals exhibit metallic luster.Metallic
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Hardness of Thulium which measures how resistant this metals is to various kinds of permanent shape change when a compressive force is applied. Hardness of Thulium
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Brinell Hardness of Thulium is a scale for measuring their hardness. Brinell Hardness
471.00 MPa
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25
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Vickers Hardness of Thulium is a scale for measuring their hardness. Vickers Hardness
520.00 MPa
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21
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The speed of sound is the distance traveled per unit time by a sound wave propagating through an elastic medium. Speed of Sound
Not Available
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Optical properties related to refractive index & the reflectivity parameters of Thulium. Optical Properties
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Allotropes are different structural modifications of an metals; the atoms of the metals are bonded together with the help of different crystal structure. Allotropes
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There are usually 3 tyopes of allotropes, out of these alpha allotropes of this metal are listed here. α Allotropes
Not Available
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There are usually 3 tyopes of allotropes, out of these beta allotropes of this metal are listed here. β Allotropes
Not Available
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There are usually 3 tyopes of allotropes, out of these gamma allotropes of this metal are listed here. γ Allotropes
Not Available
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Chemical properties or characteristics of Thulium are listed here. Chemical Properties of Thulium </>
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Chemical formula or atomic symbol of Thulium. This symbol is very useful while mentioning chemical reactions and equations of this metals. Chemical Formula
Tm
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Isotopes of Thulium are its variants, which differ in neutron number present in the nucleus. Isotopes of Thulium
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The total number of known Isotopes of this metal. Known Isotopes
32
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7
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Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. Electronegativity
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Pauling Electronegativity is very popular scale to measure Electronegativity of metals. Pauling Electronegativity
1.25
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35
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Allred Rochow Electronegativity is very famous scale to measure Electronegativity. Allred Rochow Electronegativity
1.11
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29
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Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. Opposite of that is known as Electropositivity. Electropositivity
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Pauling Electropositivity is scale used to mesure Electropositivity of Thulium. Pauling Electropositivity
2.75
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19
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The ionization energy (IE) or the ionization potential is qualitatively defined as the amount of energy required to remove the most loosely bound electron of an isolated gaseous atom to form a cation. Ionization Energies
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1st energy level of Thulium. 1st Energy Level
596.70 kJ/mol
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55
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2nd energy level of Thulium. 2nd Energy Level
1,160.00 kJ/mol
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66
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3rd energy level of Thulium. 3rd Energy Level
2,285.00 kJ/mol
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57
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4th energy level of Thulium. 4th Energy Level
4,120.00 kJ/mol
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33
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The electrochemical equivalent of a Thulium element is the mass of this element (in grams) transported by 1 coulomb of electricity. The electrochemical equivalent of an element is measured with a voltameter. Electrochemical Equivalent
2.10 g/amp-hr
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26
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Electron work function of Thulium is the minimum thermodynamic work (i.e. energy) needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface. Electron Work Function
Not Available
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List of all chemical properties/characteristics/behavior of Thulium. Other Chemical Properties
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Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
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Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes, 
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Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility
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Detailed information about the atomic structure of Thulium. Atomic Properties of Thulium </>
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Atomic number of Metals is the number of protons present in the atom of Metals metal. Atomic Number
69
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47
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The electron configuration of Thulium is the distribution of its electrons in atom or molecule in atomic or molecular orbitals. Electron Configuration
[Xe] 4f13 6s2
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In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. There are different types of Crystal structure exhibited by metals. Crystal Structure
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The hexagonal crystal system consists of the 7 point groups such that all their space groups have the hexagonal lattice as underlying lattice. The hexagonal crystal family consists of the 12 point groups such that at least one of their space groups has theHexagonal Close Packed (HCP)
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Images of crystal lattice of Thulium. It is a symmetrical three-dimensional arrangement of atoms inside a crystal. Crystal Lattice
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Information about number of Electrons, protons and neutrons present inside the atom of Thulium Metal. Atom of Thulium
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Number of protons present in the nucleus of Thulium. Number of Protons
69
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46
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Number of neutrons present in the nucleus of Thulium. Number of Neutrons
100
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33
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Number of Electrons present inside the atom of Thulium. Number of Electrons
69
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46
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Radius of an Atom of Thulium. Different radius measures are listed below. Radius of an Atom
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The atomic radius of Thulium can be defined as a measure of the size of its atoms. Atomic Radius
176.00 pm
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18
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The covalent radius of Thulium can be defined as a measure of the size of its atoms. Covalent Radius
160.00 pm
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30
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The atomic weight is the average of the isotope weights weighted for the isotope distribution and expressed on the 12C scale. Atomic Weight
168.93 amu
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42
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Atomic Volume of Thulium means volume of its atoms. Atomic Volume
18.10 cm3/mol
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28
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It will let know the previous and next atomic number of Thulium. Adjacent Atomic Numbers
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Previous atomic number metal. For eg. If the atomic number of Gold is 79 then the previous atomic number belongs to Platinum which is 78. Previous Element
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Next atomic number metal. For eg. if the atomic number of Gold is 79 then the next atomic number belongs to Mercury which is 80. Next Element
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The valence electron is an electron that is associated with an atom, and that can participate in the formation of a chemical bond. Valence Electron Potential
49.70 (-eV)
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28
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The lattice constant, or lattice parameter, refers to the physical dimension of unit cells in a crystal lattice. Lattice Constant
353.75 pm
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40
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The lengths of the edges of a unit cell and the angles between them are called the Lattice angle. Lattice Angles
π/2, π/2, 2 π/3
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It’s a ratio of Lattice constant by Lattice angle. Lattice C/A Ratio
1.57
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17
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List of different mechanical properties of Thulium metal. These properties test the mechanical strength of this metal. Mechanical Properties of Thulium </>
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The density of Thulium metal is a relationship between the mass of the Thulium atom and how much space it takes up (volume). Density of Thulium
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Thulium density at room temperature. Density At Room Temperature
9.32 g/cm3
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40
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Thulium density When at liquid state (at m.p.). Density When Liquid (at m.p.)
8.56 g/cm3
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24
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Tensile strength is a measurement of the force required to pull something such as rope, wire, or a structural beam to the point where it breaks. Tensile Strength
Not Available
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The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress. Viscosity
Not Available
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Vapor pressure or equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system. Vapor Pressure of Thulium
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Vapor Pressure of Thulium at temperature 1000 K. Vapor Pressure at 1000 K
0.06 (Pa)
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10
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How much it will compress under a given amount of external pressure, that can be found with the help of its elasticity modulus. Elasticity properties
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Shear Modulus of Thulium is a measure of its elastic properties. Shear Modulus
30.50 GPa
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22
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Bulk Modulus of Thulium is a measure of its elastic properties. Bulk Modulus
44.50 GPa
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26
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Young’s Modulus of Thulium is a measure of its elastic properties. Young’s Modulus
74.00 GPa
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27
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Poisson’s ratio, named after Siméon Poisson, is the negative ratio of transverse to axial strain. Poisson Ratio
0.21
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31
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Whether Thulium exhibits properties like ductility , malleability, weldability, sectility, etc. Other Mechanical Properties
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Ductility of metals defines their ability to deform under tensile stress; this is often characterized by the metals ability to be stretched into a wire.Ductile, 
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Malleability of metals defines their ability to deform under compressive stress; this is often characterized by the metals ability to form a thin sheet by hammering or rolling.Malleable
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List of different magnetic properties and characteristics of Thulium. Magnetic Properties of Thulium </>
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Different Magnetic significance of Thulium. Magnetic Characteristics of Thulium
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Specific gravity is the ratio of the density of a substance to the density of a reference substance. Specific Gravity
9.32
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31
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Magnetic Ordering of Thulium defines its magnetic orientation (nature) and magnetic type. Magnetic Ordering
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Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic
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List of different electrical properties and significance of Thulium. Electrical Properties
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Electrical property or nature of Thulium defines its electrical orientation and electrical type. Electrical Property
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Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor
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Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) is an intrinsic property that quantifies how strongly a given material opposes the flow of electric current. Resistivity
676.00 nΩ·m
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5
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Electrical conductivity is the measure of a material’s ability to accommodate the transport of an electric charge. Electrical Conductivity
0.02 106/cm Ω
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49
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Electron affinity is defined as the change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when an electron is added to the atom to form a negative ion. Electron Affinity
50.00 kJ/mol
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21
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Thermal characteristic and the concepts thermodynamics of Thulium. Thermal Properties of Thulium </>
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The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. Specific Heat
0.16 J/(kg K)
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35
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The molar heat capacity is the heat capacity per unit amount (SI unit: mole) of a pure substance. Molar Heat Capacity
27.03 J/mol·K
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22
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Thermal conductivity (often denoted k, λ, or κ) is the property of a material to conduct heat. Thermal Conductivity
16.90 W/m·K
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49
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The critical temperature of a substance is the temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied. Critical Temperature
Not Available
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Thermal expansion is the tendency of matter to change in shape, area, and volume in response to a change in temperature, through heat transfer. Thermal Expansion
13.30 µm/(m·K)
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29
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Enthalpy is the sum of the internal energy and the product of pressure and volume given by the equation. Enthalpy of Thulium
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The enthalpy of vaporization, also known as the heat of vaporization, is the enthalpy change required to transform a given quantity of a substance from a liquid into a gas at a given pressure. Enthalpy of Vaporization
191.00 kJ/mol
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42
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The enthalpy of fusion also known as (latent) heat of fusion is the change in enthalpy resulting from heating a given quantity of a substance to change its state from a solid to a liquid. The temperature at which this occurs is the melting point. Enthalpy of Fusion
16.80 kJ/mol
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17
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The enthalpy of atomization (also atomisation in British spelling) is the enthalpy change that accompanies the total separation of all atoms in a chemical substance (either a chemical element or a chemical compound). Enthalpy of Atomization
247.00 kJ/mol
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41
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The standard molar entropy is the entropy content of one mole of substance, under standard conditions (not standard temperature and pressure). Standard Molar Entropy
74.00 J/mol.K
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9
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Thulium Metal

Metals have been an inseparable component of major civilizations since centuries. Although metals were utilized since time unknown, researchers put considerable efforts in giving them appropriate names and defining their different properties and characteristics. This nomenclature process helped in arranging these metals in a well-organized fashion, known as the periodic table. In this periodic table, Thulium metal is also represented by the symbol Tm. This atomic symbol of Thulium is useful in indicating the position of metal Tm in the periodic table. If you are curious-headed or a science-geek, the common questions about metals are What is Thulium? What are its physical, chemical, mechanical, electrical and thermal properties? Find all the relevant facts about Tm metals in the following sections.

Periodic Table of Thulium

Periodic table of Thulium comments over its position in the periodic table, on the basis of parameters like group number, period row, atomic number and orbital block. The metals which have electrons falling in the same sub-shell are grouped under the same block corresponding to its respective orbital. Thulium metal belongs to Lanthanide Series category of the periodic table. Metals down a group have same valency while metals across a period have the same number of shells. Its group number (column number) is Not Available, whereas its period number is 6. It is placed under f block of the periodic table & is one of the prominent f block elements.

Thulium Metal Properties

Metals have certain properties by which they can be distinguished from one another. Magnetic and Atomic Structure of Thulium are few widely searched properties. Using the comparison facility, you can not only view the individual metal properties, but also compare the properties of multiple metals to get a thorough comparative analysis between the metals of your choice. Atomic number is a basic building block for the arrangement of metals in the periodic table. Atomic number of Thulium is 69 and its atomic weight is 168.93 amu. The electrons in its atom are arranged in orbitals as [Xe] 4f13 6s2. Nuclear particles in Thulium atom are 100 neutrons, 69 protons and 69 electrons.

Physical and Chemical Characteristics of Thulium

Physical and chemical characteristics of Thulium are two major criteria while comparing this metal with other metals. Physical Properties of Thulium include its external appearance, shininess at surface, color, etc. Properties like density, viscosity, melting and boiling point are also covered in this section. At room temperature, this metal is a Silvery Gray Solid. It starts melting at 1,545.00 °C. All these Thulium metal properties together define what is Thulium?

Modern Periodic Table

Modern Periodic Table
Group →

Period ↓

1

2

3

4

5

6

7

1

H

2

3

La-Lu
Ac-Lr

4

5

6

7

8

9

10

11

12

13

B

14

C
Si
Ge

15

N
P
As
Sb

16

O
S
Se
Te

17

F
Cl
Br
I
At

18

He
Ne
Ar
Kr
Xe
Rn
Og