Molybdenum (Mo)
Molybdaenum
Molybdenum (Mo) is a transition metal in period 5, group 6. Its relative atomic mass is 95.95 and the molar mass of the atom is 95.95 g/mol.
Atomic number 42
Atomic mass 95.95
Molar mass 95.95 g/mol
Category Transition metal Solid
Properties of molybdenum
| Atomic number | 42 |
|---|---|
| Symbol | Mo |
| Latin name | Molybdaenum |
| Relative atomic mass | 95.95 |
| Molar mass | 95.95 g/mol |
| Group, period, block | 6, 5, d |
| Category | Transition metal |
| State at 20 °C | Solid |
| Electron configuration | [Kr] 4d⁵ 5s¹ |
| Electronegativity (Pauling) | 2.16 |
| Atomic radius | 145 pm |
Electron configuration of molybdenum
Electrons per shell
K2L8M18N13O1
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d⁵ 5s¹
Noble-gas notation
42 protons · 42 electrons[Kr] 4d⁵ 5s¹
Formula and compounds of molybdenum
Simple substanceMomolybdenumMolar mass of Mo: 95.95 g/mol
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Frequently asked questions
The relative atomic mass of molybdenum is 95.95, so the molar mass of the atom is 95.95 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d⁵ 5s¹. Noble-gas notation: [Kr] 4d⁵ 5s¹.