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What is Actinium?

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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. Actinium In Periodic Table </>
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It’s an atomic symbol of Actinium which helps identifying it in periodic table. Symbol
Ac
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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
7
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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 actinide series, from Actinium to Lawrencium. Actinide series is located under f and d block of the periodic table.Actinide
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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
7440348
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47
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The crystallographic or Fedorov groups, and represent a description of the symmetry of the crystal. Space Group Name
Fm_ 3m
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The crystallographic or Fedorov groups, and represent a description of thesymmetry of the crystal. Space Group Number
225.00
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2
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Want to know Interesting and lesser known facts about Actinium, then you are at the right place. Facts about Actinium </>
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Bunch of Interesting facts about Actinium. Interesting Facts
Not Available
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List of different sources of Actinium. Sources
  • Obtained by Treating Radium with Neutrons
  • Ores of metals
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Lets check out the facts about history of Actinium. History of Actinium
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You might be wondering who discovered Actinium metal? Who Discovered Actinium
Friedrich Oskar Giesel
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Actinium 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 1902
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Abundance percentage of Actinium metal at various places. This will give you an idea about its Abundance levels. Abundance of Actinium
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Different types of Actinium Uses and benefits are listed down below. Uses of Actinium </>
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Uses & Benefits Uses & Benefits
  • Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
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List of industrial uses of Actinium. Industrial Uses
NA
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List of medical uses of Actinium. Medical Uses
NA
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List of lesser known uses of Actinium metal. Other Uses
  • ?
    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 Actinium. Biological Properties
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Toxicity level of Actinium metal. Toxicity
Toxic
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Whether Actinium metal is present in the Human Body? Present in Human Body
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What amount of Actinium is present in human blood normally? In Blood
0.00 Blood/mg dm-3
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37
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What amount of Actinium is present in human bone normally? In Bone
0.00 p.p.m.
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36
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Physical properties or characteristics of Actinium. These properties are mostly related to its appearance and surface. Physical Properties of Actinium </>
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The temperature at which Metals metal starts melting. Melting Point
1,227.00 °C
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38
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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
3,200.00 °C
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26
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Physical appearance or look and feel of Actinium is described here. Appearance of Actinium
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Physical state or phase of Actinium 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 Actinium metal in nature? Color
Silvery White
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Metals generally exhibit a metallic luster! Lets check out the look and feel of Actinium metal. Luster
NA
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Hardness of Actinium which measures how resistant this metals is to various kinds of permanent shape change when a compressive force is applied. Hardness of Actinium
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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 Actinium. 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 Actinium are listed here. Chemical Properties of Actinium </>
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Chemical formula or atomic symbol of Actinium. This symbol is very useful while mentioning chemical reactions and equations of this metals. Chemical Formula
Ac
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Isotopes of Actinium are its variants, which differ in neutron number present in the nucleus. Isotopes of Actinium
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The total number of known Isotopes of this metal. Known Isotopes
29
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10
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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
1.10
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44
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Allred Rochow Electronegativity is very famous scale to measure Electronegativity. Allred Rochow Electronegativity
1.00
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36
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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 Actinium. Pauling Electropositivity
2.90
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10
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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 Actinium. 1st Energy Level
499.00 kJ/mol
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84
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2nd energy level of Actinium. 2nd Energy Level
1,170.00 kJ/mol
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65
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3rd energy level of Actinium. 3rd Energy Level
1,900.00 kJ/mol
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79
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4th energy level of Actinium. 4th Energy Level
4,700.00 kJ/mol
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23
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The electrochemical equivalent of a Actinium 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
2.82 g/amp-hr
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18
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Electron work function of Actinium 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 Actinium. 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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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.Radioactivity, 
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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 Actinium. Atomic Properties of Actinium </>
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Atomic number of Metals is the number of protons present in the atom of Metals metal. Atomic Number
89
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29
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The electron configuration of Actinium is the distribution of its electrons in atom or molecule in atomic or molecular orbitals. Electron Configuration
[Rn] 6d1 7s2
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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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In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.Face Centered Cubic (FCC)
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Images of crystal lattice of Actinium. 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 Actinium Metal. Atom of Actinium
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Number of protons present in the nucleus of Actinium. Number of Protons
89
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29
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Number of neutrons present in the nucleus of Actinium. Number of Neutrons
138
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17
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Number of Electrons present inside the atom of Actinium. Number of Electrons
89
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29
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Radius of an Atom of Actinium. Different radius measures are listed below. Radius of an Atom
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The atomic radius of Actinium can be defined as a measure of the size of its atoms. Atomic Radius
195.00 pm
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7
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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
227.00 amu
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25
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Atomic Volume of Actinium means volume of its atoms. Atomic Volume
22.54 cm3/mol
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11
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It will let know the previous and next atomic number of Actinium. 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
38.60 (-eV)
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49
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The lattice constant, or lattice parameter, refers to the physical dimension of unit cells in a crystal lattice. Lattice Constant
567.00 pm
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8
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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, π/2
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It’s a ratio of Lattice constant by Lattice angle. Lattice C/A Ratio
Not Available
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List of different mechanical properties of Actinium metal. These properties test the mechanical strength of this metal. Mechanical Properties of Actinium </>
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The density of Actinium metal is a relationship between the mass of the Actinium atom and how much space it takes up (volume). Density of Actinium
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Actinium density at room temperature. Density At Room Temperature
10.00 g/cm3
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37
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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 Actinium
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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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Poisson’s ratio, named after Siméon Poisson, is the negative ratio of transverse to axial strain. Poisson Ratio
Not Available
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Whether Actinium exhibits properties like ductility , malleability, weldability, sectility, etc. Other Mechanical Properties
NA
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List of different magnetic properties and characteristics of Actinium. Magnetic Properties of Actinium </>
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Different Magnetic significance of Actinium. Magnetic Characteristics of Actinium
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Specific gravity is the ratio of the density of a substance to the density of a reference substance. Specific Gravity
10.07
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28
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Magnetic Ordering of Actinium 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 Actinium. Electrical Properties
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Electrical property or nature of Actinium defines its electrical orientation and electrical type. Electrical Property
Unknown
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Thermal characteristic and the concepts thermodynamics of Actinium. Thermal Properties of Actinium </>
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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
0.12 J/(kg K)
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40
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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
27.20 J/mol·K
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18
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Thermal conductivity (often denoted k, λ, or κ) is the property of a material to conduct heat. Thermal Conductivity
12.00 W/m·K
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60
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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
Not Available
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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 Actinium
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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
301.00 kJ/mol
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36
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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
56.50 J/mol.K
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25
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Actinium 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, Actinium metal is also represented by the symbol Ac. This atomic symbol of Actinium is useful in indicating the position of metal Ac in the periodic table. If you are curious-headed or a science-geek, the common questions about metals are What is Actinium? What are its physical, chemical, mechanical, electrical and thermal properties? Find all the relevant facts about Ac metals in the following sections.

Periodic Table of Actinium

Periodic table of Actinium 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. Actinium metal belongs to Actinide 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 7. It is placed under f block of the periodic table & is one of the prominent f block elements.

Actinium Metal Properties

Metals have certain properties by which they can be distinguished from one another. Magnetic and Atomic Structure of Actinium 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 Actinium is 89 and its atomic weight is 227.00 amu. The electrons in its atom are arranged in orbitals as [Rn] 6d1 7s2. Nuclear particles in Actinium atom are 138 neutrons, 89 protons and 89 electrons.

Physical and Chemical Characteristics of Actinium

Physical and chemical characteristics of Actinium are two major criteria while comparing this metal with other metals. Physical Properties of Actinium 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 White Solid. It starts melting at 1,227.00 °C. All these Actinium metal properties together define what is Actinium?

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