Information valid for Rn-222 unless otherwise noted
[ATOM]

Radon

 [ATOM]

Basic Information


Symbol: Rn
Atomic Number: 86
Mass: (222)
Melting Point: -71
Boiling Point: -61.8
Number of Protons/Electrons: 86
Number of Neutrons: 136
Classification: Noble Gas
Crystal Structure: Cubic
Density: 9.73
Color: colorless

Atomic Structure

[Bohr Model of Radon]  
Number of Energy Levels: 6

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 32
    Fifth Energy Level: 18
    Sixth Energy Level: 8

Isotopes

Isotope Half Life
Rn-21114.6 hours
Rn-21224 minutes
Rn-2170.6 milliseconds
Rn-21835 milliseconds
Rn-2193.96 seconds
Rn-22055.61 seconds
Rn-2223.82 days

Facts


Date of Discovery: 1898
Discoverer: Fredrich Ernst Dorn
Name Origin: From radium
Uses: treatment of cancer
Obtained From: decay of radium

Related Links

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  1. Radon Information
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