موليبدنوم (Mo)
موليبدنوم is the chemical element with atomic number 42 and symbol Mo. It is a فلز انتقالي in period 5, group 6, with a standard atomic weight of 95.95 u.
حقائق أساسية
- Z
- 42
- Atomic weight
- 95.95 u
- Category
- فلز انتقالي
- State at 298 K
- Solid
- Occurrence
- primordial
- Discovered
- 1778
- CAS
- 7439-98-7
الخصائص المقيسة
| Property | Value | Source |
|---|---|---|
| Electronegativity | 2.16 | National Center for Biotechnology Information (NIH) |
| Melting point | 2,896 K | National Center for Biotechnology Information (NIH) |
| Boiling point | 4,912 K | National Center for Biotechnology Information (NIH) |
| Density stp | 10.2 g/cm³ | National Center for Biotechnology Information (NIH) |
| Atomic radius empirical | 209 pm | National Center for Biotechnology Information (NIH) |
| Ionization energy 1st | 684.3 kJ/mol | National Center for Biotechnology Information (NIH) |
| Electron affinity | 72 kJ/mol | National Center for Biotechnology Information (NIH) |
التوزيع الإلكتروني
- Noble gas notation
- [Kr] 4d⁵ 5s¹
- Full notation
- 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d⁵ 5s¹
- Electrons per shell
- 2, 8, 18, 13, 1