Which of the following is generalized electronic configuration of transition metals?
(n-2)f1-14(n-1)d1-2 ns2
(n-3)f1-14(n-2)d1-2 (n-1)s2
(n-1)d1-10ns1-2
(n-2)d1-10 (n-1)s1-2
In transition metals d orbital penultimate energy level is gradually filled. Hence its generalized electronic configuration is (n-1)d1-10ns1-2.
The outer electron configuration of first transition series is (n−1)d1−10ns1−2. Then value of n is: