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Elemental Periodic Table

hafnium

Atomic number: 72
Atomic weight: 178.49
Symbol: Hf
Group number: 4
Electronic configuration: [Xe].4f14.5d2.6s2


Physical data

Standard state: solid at 298 K
Colour: grey steel
Density of solid at ambient temperature/kg m-3: 13310
Molar volume/cm3: 13.44


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