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Atomic symbol - Hf
Atomic weight - 178.49
Atomic number - 72
Electron configuration - 2-8-18-32-10-2
Oxidation states - +4
State of matter - solid
Heavy metal-ductile
Discovered in 1923 by Dirk Coster and George Charles de Hevesy
Boils at 5400 .C, melts at 2150 .C

Chemically similar to zirconium (40), hafnium is used as nuclear control rods.

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