Question

For principle quantum number n=4,the total number of orbitals having l=3 is
A. 3
B. 7
C. 5
D. 9

Answer 1

Correct Answer - B
`n=4 to 1s^2, 2s^2 , 2p^6, 3s^2, 3p^6, 3d^10 , 4s^2 , 4p^6 , 4d^10 , 4f^14`
So l=(n-1)=4-1=3 which is f subshell contain 7 orbital