Molybdenum
Symbol
Mo
Atomic Number
42
Atomic Weight
95.94
Element Classification
Discovered By
Carl Wilhelm Scheele
Discovery Date
1778 (Sweden)
Name Origin
Greek: molybdos (lead).
Density (g/cc)
10.22
Melting Point (K)
2890
Boiling Point (K)
4885
Appearance
Silvery white, hard metal
Atomic Radius (pm)
139
Atomic Volume (cc/mol)
9.4
Covalent Radius (pm)
130
Ionic Radius
62 (+6e) 70 (+4e)
Specific Heat
0.251
Fusion Heat (kJ/mol)
28
Evaporation Heat (kJ/mol)
~590
Thermal Conductivity (@25°C W/m K)
(138)
Debye Temperature (K)
380.00
Pauling Negativity Number
2.16
First Ionizing Energy (kJ/mol)
684.8
Oxidation States
6, 5, 4, 3, 2, 0
Electronic Configuration
[Kr] 4d5 5s1
Lattice Structure
Body-Centered Cubic(BCC)
Lattice Constant
3.150
Lattice C/A Ratio
n/a
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