Information valid for Rb-85 unless otherwise noted
[ATOM]

Rubidium

 [ATOM]

Basic Information


Symbol: Rb
Atomic Number: 37
Mass: 85.4678
Melting Point: 38.89
Boiling Point: 688
Number of Protons/Electrons: 37
Number of Neutrons: 48
Classification: Alkali Metal
Crystal Structure: Cubic
Density: 1.532
Color: silver

Atomic Structure

[Bohr Model of Rubidium]  
Number of Energy Levels: 5

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 8
    Fifth Energy Level: 1

Isotopes

Isotope Half Life
Rb-814.57 hours
Rb-822.25 minutes
Rb-8386.2 days
Rb-8432.9 days
Rb-85Stable
Rb-8618.65 days
Rb-874.8e+010 years
Rb-8817.7 minutes
Rb-8915.44 minutes
Rb-902.6 minutes
Rb-90m4.3 minutes

Facts


Date of Discovery: 1861
Discoverer: R. Bunsen
Name Origin: From the Latin word rubidus (red)
Uses: catalyst, photocells
Obtained From: lithium production

Related Links

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