MCQ
Electronic configuration of $C$ is
- ✓$1{s^2},2{s^2}2{p^2}$
- B$1{s^2},2{s^2}2{p^3}$
- C$1{s^2},2{s^2}$
- D$1{s^2},2{s^2}2{p^6}$
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Given : $N -N =159\,kJ\,mol^{-1};\,\,H-H = 436\,kJ\,mol^{-1}$
$N \equiv N = {\text{ }}941{\text{ }}kJ{\text{ }}mo{l^{ - 1}}{\text{ }};{\text{ }}N-H{\text{ }} = {\text{ }}398{\text{ }}kJ{\text{ }}mo{l^{ - 1}}$ .....$kJ\,mol^{-1}$
$(A)\, n=4,l=1$ $(B)\, n=4,l=0$
$(C) \,n=3,l=2$ $(D)\, n=3,l=1$
can be placed in order of increasing energy as :