Information valid for K-39 unless otherwise noted
[ATOM]

Potassium

 [ATOM]

Basic Information


Symbol: K
Atomic Number: 19
Mass: 39.0983
Melting Point: 63.65
Boiling Point: 774
Number of Protons/Electrons: 19
Number of Neutrons: 20
Classification: Alkali Metal
Crystal Structure: Cubic
Density: 0.862
Color: silvery

Atomic Structure

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

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

Isotopes

Isotope Half Life
K-39Stable
K-401.28e+009 years
K-41Stable
K-4212.4 hours
K-4322.3 hours

Facts


Date of Discovery: 1807
Discoverer: Sir Humphrey Davy
Name Origin: potash
Symbol Origin: From the Latin word kalium
Uses: glass, soap
Obtained From: minerals (carnallite)

Related Links

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