Question

6. Certain subshells are given below.
2s, 2d, 3f, 3d, 5s, 3p
a) Which are the subshells that are not possible
b) Give reason​

Answer 1

Answer : Subshell 2d is not possible.

Reason:

• The first shell has only one sub-shell, i.e., 1s, which has only one orbital, i.e., 1s orbital. Therefore, 1p orbital is not possible.
• (ii) The second sub-shell has two subshells, i.e., 2s and 2p. Therefore, 2s orbitals are possible.
• (iii) The third subshell has three subshells, i.e., 3s, 3p and 3d. Therefore, 3f-orbitals are not possible.
• (iv) The fourth shell has four subshells has four subshells, i.e., 4s, 4p 4d and 4f. Therefore, 4d-orbitals are possible

Answer 2

Answer:   2d 3f are not possible

Explanation:

according to quantum numbers the l value should be less than n(principal quantum number) so in

2d : n=2 and l= 2

in 3f : n=3 and l=3

thats why 2d and 3f are not possible....