Question

Column-I: Subshell Column-II: Number of spherical nodes Column-III: Radial plot

The only correct combination for the last electron of K is:

• A. (IV) (i) (R)
• B. (IV) (iv) (Q)
• C. (II) (ii) (P)
• D. (II) (iii) (Q)

Answer 1

The correct option is C

(II) (ii) (P)

$K=1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^1$

For last electron, subshell is 4s.

Number of spherical nodes $=n-l-1$

= 4 - 0 - 1 = 3