1.

Giving reasons indicate which one of the following would be coloured ? Cu^(+) , VO^(2+), Sc^(3+), Ni^(2+) ( At. Nos. Cu = 29 , V = 23, Sc = 21 , N i = 28]

Answer»

SOLUTION :`NI^(2+)` due to INCOMPLETELY FILLED d-orbitals.


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