Zirconium

Source: http://www.tabulka.cz/english/elements/show.asp?id=40

name Zirconium
latin Zirkonium
french Zirconium
german Zirkonium
symbol Zr
proton number 40
atomic weight 91.224
Pauling electronegativity 1.33
electronic configuration [Kr] 4d25s2
1s22s22p63s23p63d104s24p64d25s2
melting point 2128 K, 1855°C, 3371°F
boiling point 4682 K, 4409°C, 7968°F
group 4
period 5
state (by 20°C) solid
oxidation states +4

Discoverer

Year of discovery Discoverer
1789 Martin H. Klaproth (1743-1817)


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