Question

Zn2+ salts are colourless but cu2+ salts are blue or green . Why

Answer 1

Answer:

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Explanation:

Zn salts are white while Cu2+ salts are coloured. ... In case of Zn fully filled d orbital is present therefore no d-d transition can be possible in this case and it is colorless. In case of copper because of d-d transition electrons emits light in the visible range and hence they are colored compounds