Cd
Cadmium
Z 48 112.414 g/molTransition Metal
Nucleus
48 Protons
64 Neutrons
48 Electrons (2 Valence)
Shell distribution: K2 • L8 • M18 • N18 • O2 • P0 • Q0
Electron Configuration
Energy
7p
6d
5f
7s
6p
5d
4f
6s
5p
4d
5s
4p
3d
4s
3p
3s
2p
2s
1s
[Kr]4d105s2
Oxidation States
CommonRare
0
Pick a state to see its ions
Radii
Empirical
155 pm1.55 Å
Calculated
161 pm1.61 Å
Covalent
144±9 pm1.44±0.09 Å
Van der Waals
158 pm1.58 Å
IonicCd2+
95 pm0.95 Å
Crystal Structure
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Hexagonal close-packed
Pearson symbol
hP2
Space group
P63/mmc No. 194