Question

In transition elements, the incoming electron occupies (n-1)d subshell in preference to
(A) np - subshell
(B) ns - subshell
(C) (n-1) p-subshell (D) (n + 1) s-subshell​

Answer 1

Answer:

A

Explanation:

I'm not sure but according to my understanding, for example in 3 d series of d block elements, firstly electron firstly filled in 3d I. e, (n-1 ) then electron filled in 4 p electrons according to the rule of Aufbau Principle.