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Chromium at Chemical Elements.com
Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page


Basic Information


Name: Chromium
Symbol: Cr
Atomic Number: 24
Atomic Mass: 51.9961 amu
Melting Point: 1857.0 °C (2130.15 K, 3374.6 °F)
Boiling Point: 2672.0 °C (2945.15 K, 4841.6 °F)
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]  
Number of Energy Levels: 4

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 13
    Fourth Energy Level: 1

Isotopes

Isotope Half Life
Cr-4942.3 minutes
Cr-50Stable
Cr-5127.7 days
Cr-52Stable
Cr-53Stable
Cr-54Stable

Facts


Date of Discovery: 1797
Discoverer: Louis Vauquelin
Name Origin: From the Greek word chrôma (color)
Uses: Stainless steel
Obtained From: Chromite

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MLA Format for Citing This Page


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