Periodic Table of the Elements: Hafnium

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Periodic Table of the Elements: Hafnium
Atomic Number:72
Atomic Symbol:Hf
 Hafniumhafnium
, metallic chemical element; symbol Hf; at. no. 72; at. wt. 178.49; m.p. about 2,227°C;; b.p. 4,602°C;; sp. gr. 13.31 at 20°C;; valence +4. Hafnium is a lustrous, ductile, silvery metal with a hexagonal, close-packed crystalline structure.
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Atomic Weight:178.49
Electron Configuration:2 · 8 · 18 32 · 10 · 2
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