Information valid for Ca-40 unless otherwise noted
[ATOM]

Calcium

 [ATOM]

Basic Information


Symbol: Ca
Atomic Number: 20
Mass: 40.078
Melting Point: 839
Boiling Point: 1484
Number of Protons/Electrons: 20
Number of Neutrons: 20
Classification: Alkaline Earth
Crystal Structure: Cubic
Density: 1.55
Color: Silvery

Atomic Structure

[Bohr Model of Calcium]  
Number of Energy Levels: 4

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

Isotopes

Isotope Half Life
Ca-40Stable
Ca-41103000 years
Ca-42Stable
Ca-43Stable
Ca-44Stable
Ca-45162.7 days
Ca-46Stable
Ca-474.5 days
Ca-48Stable
Ca-498.7 minutes

Facts


Date of Discovery: 1808
Discoverer: Sir Humphrey Davy
Name Origin: From the latin word calcis (lime)
Uses: life forms for bones and shells
Obtained From: chalk, limestone, marble. 3.5% of crust

Related Links

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  1. Calcite
If you know of any other links for Calcium, please let me know
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