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Grade: 11
        
which of the following is a coloured ion?
1)Cu+
2)Cu2+
3)K+
4)Na+
and why?
2 years ago

Answers : (1)

Rajat Verma
19 Points
							Cu+2 contains unpaired electron in its outermost d-orbital.Hence it is coloured.Cu+ = 3d10Cu+2 = 3d9K+ = 3s2 3p6Na+ = 2s2 2p6
						
2 years ago
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