MCQ
Correct statement is
- A$K = 4{s^1},\,\,Cr = 3{d^4}4{s^2},\,\,Cu = 3{d^{10}}4{s^2}$
- B$K = 4{s^2},\,\,Cr = 3{d^4}4{s^2},\,\,Cu = 3{d^{10}}4{s^2}$
- C$K = 4{s^2},\,\,Cr = 3{d^5}4{s^1},\,\,Cu = 3{d^{10}}4{s^2}$
- ✓$K = 4{s^1},\,\,Cr = 3{d^5}4{s^1},\,\,Cu = 3{d^{10}}4{s^1}$
