Niobium

Source: http://www.tabulka.cz/english/elements/show.asp?id=41

name Niobium
latin Niobium
french Niobium
german Niob
symbol Nb
proton number 41
atomic weight 92.90638
Pauling electronegativity 1.6
electronic configuration [Kr] 4d45s1
1s22s22p63s23p63d104s24p64d45s1
melting point 2750 K, 2477°C, 4490°F
boiling point 5017 K, 4744°C, 8571°F
group 5
period 5
state (by 20°C) solid
oxidation states +3, +5

Discoverer

Year of discovery Discoverer
1801 Charles Hatchett


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