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Cadmium at Chemical Elements.com
Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page

Basic Information

Name: Cadmium
Symbol: Cd
Atomic Number: 48
Atomic Mass: 112.411 amu
Melting Point: 320.9 °C (594.05 K, 609.62 °F)
Boiling Point: 765.0 °C (1038.15 K, 1409.0 °F)
Number of Protons/Electrons: 48
Number of Neutrons: 64
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 8.65 g/cm3
Color: Silvery

Atomic Structure

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

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


Isotope Half Life
Cd-109462.0 days
Cd-111m48.5 minutes
Cd-1139.0E15 years
Cd-113m14.1 years
Cd-1152.2 days
Cd-115m44.6 days
Cd-1172.5 hours
Cd-1183.4 hours


Date of Discovery: 1817
Discoverer: Fredrich Stromeyer
Name Origin: From the Greek word kadmeia (ancient name for calamine) and from the Latin word cadmia
Uses: poisonous, nickel-cadmium batteries
Obtained From: by-product of zinc refining

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