Chapter 29, Problem 36P

a.

To determine

To identify: The elements of $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^9$ electronic configuration.

b.

To determine

To identify: The elements of $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}4p^{6}5s^{2}4d^{10}5p^{6}6s^{2}4f^{14}5d^7$ electronic configuration.