2s2 sp6

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Which electronic configuration is not observing the ( n + 1) rule (a) 1s2, 2s 2p6, 3s2 3p6 3d1, 4s2 (b) 1s2, 2s2 sp6, 3s2 3p6 3d7, 4s2 (c) 1s2 ,2s2 2p6, 3s2 3p6 3d5 ,4s1 (d) 1s, 2s2 2p6 ,3s2 3p6 3d8,4s2
29
Nov
Which electronic configuration is not observing the ( n + 1) rule (a) 1s2, 2s 2p6, 3s2 3p6 3d1, 4s2 (b) 1s2, 2s2 sp6, 3s2 3p6 3d7, 4s2 (c) 1s2 ,2s2 2p6, 3s2 3p6 3d5 ,4s1 (d) 1s, 2s2 2p6 ,3s2 3p6 3d8,4s2 2s 2p6 2s2 2p6 2s2 sp6 3s2 3p6 3d1 3s2 3p6 3d5 [...]
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Tags: 2s 2p6 , 2s2 2p6 , 2s2 sp6 , 3s2 3p6 3d1 , 3s2 3p6 3d5 , 3s2 3p6 3d7 , 3s2 3p6 3d8 , 4s^2 , 4s1 (d) 1s , 4s2 (b) 1s2 , 4s2 (c) 1s2 , Which electronic configuration is not observing the ( n + 1) rule (a) 1s2 ,