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Which of the following do and which don...

Which of the following do and which donot make sense ?
`2p^(5), 2d^(4), 4s^(2), 3 f^(7), 4p^(10)`.

Text Solution

Verified by Experts

`2p^(5)`: Does make sense
`2d^(4)` : Does not make sense because second shell cannot have d sub-shell
`4s^(2) `: Does make sense
`3f^(7)` : Does not make sense because third shell cannot have f-sub-shell.
`4p^(10)` : Does not make sense because p sub-shell cannot have more than six electrons.
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