Answers

2014-07-25T12:40:33+05:30
1s ^{2} 2s ^{2} 2p ^{6} 3s ^{2} 3p ^{6} 4s ^{1} 3d ^{10}
Is the elctronic configuration of Cu metal.
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2014-07-25T13:57:32+05:30
Cu = 1s^2 , 2s^2 , 2p^6 , 3s^2 , 3p^6 , 4s^1 , 3d^10.
Cr^3+ = 1s^2 , 2s^2 , 2p^6 , 3s^2 , 3p^6 , 3d^3 .
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