-- card: 32973 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 14320
-- name: Hf


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Hf

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Hafnium

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72

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178.49

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13.31

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2227

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4602

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+4

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(L. Hafinia, Copenhagen) Discovered in 1923 by Coster and von Hevesey. Named after the city in which it was discovered. 

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transition metal, silver luster, ductile, similar to zirconium and difficult to separate from zirconium, corrosion resistant, finely divided it explodes in air

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alloying with iron, titanium, niobium and others, nuclear reactor control rods, gas-filled and incandescent lamps,            "getter" for  scavenging oxygen and nitrogen

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0.144

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Electron Configuration:

1s  2s  2p  3s  3p  3d  4s  4p  4d  4f  5s  5p  5d  5f  6s  6p  6d  6f  7s 
 2   2    6    2    6   10   2   6  10  14   2    6   2         2