For n = 3.
Write all the sub-shells

Name the sub-shell if l = O.

Name the sub-shell if l = 2.

Sub-shell electronic configuration of X is given below. 1s^2, 2s^2, 2p^5 : Write the sub-shell electronic configuration of the element next to X in same period.

For a given principal level n = 4, the energy of its sub-shells is of the order

a. How many sub-shell are associated with n = 4 ? b. How many electron will be present in the sub-shell having m_(s) value of -1//2 for n = 4 ?

a. How many sub-shell are associated with n = 4 ? b. How many electron will be present in the sub-shell having m_(s) value of -1//2 for n = 4 ?

How many sub-shells are associated with n=4 ? How many electrons will be present in the sub-shell having ms value of -1/2 for n=4 ?

Number of orbitals for the sub shell 3d is

Rule (A) : Electrons are assigned to orbitals in order of increasing value of n+l.Rule (B) : For sub-shells with the same value of n+l electrons are assigned first to the sub shells with lower ‘n’.