Question

Which of the following electronic configurations is not possible: O Li-3: 1s22s1 O N-7: 152 2s22p3 O Ne-10: 152 2p6 352 O K-1
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Answer #1

Third option is not possible Ne-10 :1s2 2p6 3s2. . Actually the correct order for configuration is 1s2 2s2 2p6 3s2 3p6 and so on . We have to put no. Of electron in this order only so for Ne-10 it would be 1s2 2s2 2p6 .

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Which of the following electronic configurations is not possible: O Li-3: 1s22s1 O N-7: 152 2s22p3...
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