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Basic Information
Name: Molybdenum
Symbol: Mo
Atomic Number: 42
Atomic Mass: 95.94 amu
Melting Point: 2617.0 °C (2890.15 °K, 4742.6 °F)
Boiling Point: 4612.0 °C (4885.15 °K, 8333.6 °F)
Number of Protons/Electrons: 42
Number of Neutrons: 54
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 10.22 g/cm3
Color: silverish
Atomic Structure
![[Bohr Model of Molybdenum]](Chemical Elements_com - Molybdenum (Mo)_files/b0042.gif) |
Number of Energy Levels: 5 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 18 Fourth Energy Level: 13 Fifth Energy Level: 1 |
Isotopes
| Isotope | Half Life |
| Mo-91 | 15.5 minutes |
| Mo-92 | Stable |
| Mo-93 | 3500.0 years |
| Mo-94 | Stable |
| Mo-95 | Stable |
| Mo-96 | Stable |
| Mo-97 | Stable |
| Mo-98 | Stable |
| Mo-99 | 2.74 days |
| Mo-100 | Stable |
| Mo-101 | 14.6 minutes |
Facts
Date of Discovery: 1778
Discoverer: Carl Wilhelm Scheele
Name Origin: From the Greek word molubdos (lead)
Uses: aircraft, missiles
Obtained From: molybdenite, wulfenite