Periodic Table · element
Cadmium
Cd · Z 48
- atomic number
- 48
- atomic mass
- 112.41
- notation
- Cd
- group
- 12: Zinc
- period
- 5
- state0c
- Solid
- state20c
- Solid
- occurrence
- Primordial
- density
- 8.65
- melting pt
- 321.1
- boiling pt
- 767
- discovered
- 1817
- abundance
- 0.15
- bio class
- Ultratrace
- ore grade
- 300
- ore minerals
- in sphalerite (greenockite)
- mined as
- By-product
- extraction
- Cemented out of zinc electrolyte during purification, then distilled or electrowon.
bio role
A marine diatom runs a cadmium carbonic anhydrase where zinc is scarce — the only known essential use of an element that is otherwise purely toxic.
categories
#Transition Metal#Metal#Volatile Metals
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