MCQ
Which of the following electronic configurations is not possible
- A$1{s^2}\,\,2{s^2}$
- B$1{s^2}2{s^2}2{p^6}$
- C$3{d^{10}}4{s^2}4{p^2}$
- ✓$1{s^2}2{s^2}\,2{p^2}3{s^1}$
✓
Answer
Correct option: D.
$1{s^2}2{s^2}\,2{p^2}3{s^1}$
d
(d) When $2p$ orbital is completely filled then electron enter in the $3s$. The capacity of $2p$ orbital containing ${e^ - }$is $6$. So $1{s^2},\,2{s^2}2{p^2}3{s^1}$ is a wrong electronic configuration the write is $1{s^2}2{s^2}2{p^3}.$
(d) When $2p$ orbital is completely filled then electron enter in the $3s$. The capacity of $2p$ orbital containing ${e^ - }$is $6$. So $1{s^2},\,2{s^2}2{p^2}3{s^1}$ is a wrong electronic configuration the write is $1{s^2}2{s^2}2{p^3}.$
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