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Mo
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General
Name, Symbol, Number molybdenum, Mo, 42
Chemical series transition metal
Group, Period, Block 6 (VIB), 5 , dThe d-block of the periodic table of elements consists of those periodic table groups that contain elements in which, in the atomic ground state, the highest-energy electron is in a d- orbital. The d-block elements are often also known as transition metal
DensityFor other meanings of density, see density (disambiguation Density (symbol: rho Greek: rho) is a measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of an object equals its total mass div, Hardness 10280 kg/m3Kilogram per cubic metre is the SI measure of density and is represented as kg/m³, where kg stands for kilogram and m³ stands for cubic metre. The density of water is about 1000 kg/m³, since a cubic metre of water weighs about a tonne. kg/m³" is sometimes, 5.5
AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of grey metallic
Atomic properties
Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot 95.94 amuThe atomic mass unit amu , unified atomic mass unit u , or dalton Da , is a small unit of mass used to express atomic masses and molecular masses. It is defined to be 1/12 of the mass of one atom of Carbon-12. Accordingly, :1 u 1/N gram 1/(1000 N) kg (whe
Atomic radiusAtomic radius is the distance from the atomic nucleus to the outmost stable electron orbital in a atom that is at equilibrium and is measured in picometers or Angstroms. Atomic radii are called covalent radii (a reference to the types of bonds formed) whe 145 pm
Covalent radius 145 pm
van der Waals radius not known pm
Electron configuration [ Kr]4d55 s1
e- 's per energy level 2, 8, 18, 13, 1
Oxidation states ( Oxide) 2,3,4,5,6 (strong acid)
Crystal structure body centered cubic
Physical properties
State of matter solid ( __)
Melting point 2896 K (4753 ° F)
Boiling point 4912 K (8382 °F)
Molar volume 9.38 ×10-6 m3/mol
Heat of vaporization 598 kJ/mol
Heat of fusion 32 kJ/mol
Vapor pressure 3.47 Pa at 3000 K
Speed of sound __ m/s at __ K
Miscellaneous
Electronegativity 2.16 ( Pauling scale)
Specific heat capacity 250 J/(kg*K)
Electrical conductivity 18.7 106/(m· ohm)
Thermal conductivity 138 W/(m*K)
1st ionization potential 684.3 kJ/mol
2nd ionization potential 1560 kJ/mol
3rd ionization potential 2618 kJ/mol
4th ionization potential 4480 kJ/mol
Most stable isotopes
iso NA half-life DM DE M eV DP
93Mo {syn.} 4000 y ε 0.405 93Nb
99Mo {syn.} 65.94 h β 1.357 99Tc
100Mo {syn.} 1E19 y β 3.034 100Ru
92Mo 14.84% Mo is stable with 50 neutrons
94Mo 9.25% Mo is stable with 52 neutrons
95Mo 15.92% Mo is stable with 53 neutrons
96Mo 16.68% Mo is stable with 54 neutrons
97Mo 9.55% Mo is stable with 55 neutrons
98Mo 24.13% Mo is stable with 56 neutrons
SI units & STP are used except where noted.

Molybdenum is a chemical element in the periodic table that has the symbol Mo and atomic number 42.



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