Information valid for Xe-131 unless otherwise noted
[ATOM]

Xenon

 [ATOM]

Basic Information


Symbol: Xe
Atomic Number: 54
Mass: 131.29
Melting Point: -111.9
Boiling Point: -108.1
Number of Protons/Electrons: 54
Number of Neutrons: 77
Classification: Noble Gas
Crystal Structure: Cubic
Density: 5.8971
Color: Colorless Gas

Atomic Structure

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

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

Isotopes

Isotope Half Life
Xe-12220.1 hours
Xe-1232 hours
Xe-124Stable
Xe-12517.1 hours
Xe-126Stable
Xe-12736.41 days
Xe-128Stable
Xe-129Stable
Xe-129m8.89 days
Xe-130Stable
Xe-131Stable
Xe-131m4.9 days
Xe-132Stable
Xe-1335.24 days
Xe-133m2.19 days
Xe-134Stable
Xe-1359.1 hours
Xe-135m15.36 minutes
Xe-136Stable
Xe-1373.82 minutes
Xe-13814.13 minutes

Facts


Date of Discovery: 1898
Discoverer: Sir William Ramsay
Name Origin: From the Greek word xenon (stranger)
Uses: powerful lamps, bubble chambers
Obtained From: liquid air

Related Links

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