![[ATOM]](atom.gif) |
Chromium
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Information valid for Cr-52 unless otherwise noted
Basic Information
Symbol: Cr
Atomic Number: 24
Mass: 51.9961
Melting Point: 1857.0 C
Boiling Point: 2672.0 C
Number of Protons/Electrons: 24
Number of Neutrons: 28
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 7.19 g/cm3
Color: gray
Atomic Structure
![[Bohr Model of Chromium]](b0024.gif) |
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Number of Energy Levels: 4
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 13
Fourth Energy Level: 1
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Isotopes
| Isotope |
Half Life |
| Cr-49 |
42.3 minutes |
| Cr-50 |
Stable |
| Cr-51 |
27.7 days |
| Cr-52 |
Stable |
| Cr-53 |
Stable |
| Cr-54 |
Stable |
Facts
Date of Discovery: 1797
Discoverer: Louis Vauquelin
Name Origin: From the Greek word chrôma (color)
Uses: Stainless steel
Obtained From: Chromite