Information valid for Pb-207 unless otherwise noted
[ATOM]

Lead

 [ATOM]

Basic Information


Symbol: Pb
Atomic Number: 82
Mass: 207.2
Melting Point: 327.5
Boiling Point: 1740
Number of Protons/Electrons: 82
Number of Neutrons: 126
Classification: Other Metals
Crystal Structure: Cubic
Density: 11.34
Color: bluish

Atomic Structure

[Bohr Model of Lead]  
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: 4

Isotopes

Isotope Half Life
Pb-20253000 years
Pb-2032.16 days
Pb-204Stable
Pb-204m1.12 hours
Pb-2051.5e+007 years
Pb-206Stable
Pb-207Stable
Pb-208Stable
Pb-2093.25 hours
Pb-21022.3 years
Pb-21136.1 minutes
Pb-21210.64 hours
Pb-21427 minutes

Facts


Date of Discovery: Known to the ancients
Discoverer: Unknown
Name Origin: From the Greek word protos (first)
Symbol Origin: From the Latin word plumbum (lead)
Uses: solder and shielding against radiation, batteries
Obtained From: galena

Related Links

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