Molybdenum

Molybdenum, ₄₂Mo

Molybdenum
Pípè	/məˈlɪbdənəm/ ​(mə-LIB-dən-əm)
Ìhànsójú	gray metallic
Ìwúwo átọ̀mù Ar, std(Mo)	95.95(1)[1]
Molybdenum ní orí tábìlì àyè
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Nọ́mbà átọ̀mù (Z)	42
Ẹgbẹ́	group 6
Àyè	àyè 5
Àdìpọ̀	Àdìpọ̀-d
Ẹ̀ka ẹ́límẹ́ntì	Transition metal
Ìtò ẹ̀lẹ́ktrọ́nù	[Kr] 4d5 5s1
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 18, 13, 1
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	2896 K ​(2623 °C, ​4753 °F)
Ígbà ìhó	4912 K ​(4639 °C, ​8382 °F)
Kíki (near r.t.)	10.28 g/cm3
when liquid (at m.p.)	9.33 g/cm3
Heat of fusion	37.48 kJ/mol
Heat of	617 kJ/mol
Molar heat capacity	24.06 J/(mol·K)
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 2742 2994 3312 3707 4212 4879
Atomic properties
Oxidation states	−4, −2, −1, 0, +1,[2] +2, +3, +4, +5, +6 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 2.16
Atomic radius	empirical: 139 pm
Covalent radius	154±5 pm
Color lines in a spectral range Spectral lines of molybdenum
Other properties
Natural occurrence	primordial
Crystal structure	​(bcc)
Thermal expansion	4.8 µm/(m·K) (at 25 °C)
Thermal conductivity	138 W/(m·K)
Electrical resistivity	53.4 n Ω·m (at 20 °C)
Magnetic ordering	paramagnetic[3]
Young's modulus	329 GPa
Shear modulus	126 GPa
Bulk modulus	230 GPa
Poisson ratio	0.31
Mohs hardness	5.5
Vickers hardness	1530 MPa
Brinell hardness	1500 MPa
CAS Number	7439-98-7
Main isotopes of molybdenum
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 92Mo 14.84% 92Mo is stable with 50 neutrons 93Mo syn 4×103 y ε - 93Nb 94Mo 9.25% 94Mo is stable with 52 neutrons 95Mo 15.92% 95Mo is stable with 53 neutrons 96Mo 16.68% 96Mo is stable with 54 neutrons 97Mo 9.55% 97Mo is stable with 55 neutrons 98Mo 24.13% 98Mo is stable with 56 neutrons 99Mo syn 65.94 h β− 0.436, 1.214 99m Tc{{{ps1}}} γ 0.74, 0.36, 0.14 - 100Mo 9.63% 7.8×1018 y β−β− 3.04 100Ru
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