Question

What is the general electronic configuration for second row transition series?
A. `[Ne]3d^(1-10),4s^(2)`
B. `[Ar]3d^(1-10),4s^(1-2)`
C. `[Kr]4d^(1-10),5s^(1-2)`
D. `[Xe]5d^(1-10),5s^(1-2)`

Answer 1

Correct Answer - C
Transition elements have three series 3d, 4d and 5d, 3d series has elements 21 (Sc) to 30 (Zn) atomic number. 4d series has elements 39 (Y) to 48 (Cd) atomic number.` [Kr]4d^(1-10),5s^(1-2)` is the general configuration of Iind row series.