Question

Which of the following configuration is not following Hund's rule?​

Answer 1

Answer:

The correct answer in the option is ("D" 3s and 3p")

Explanation:

1. According to Hund's rule, the configuration '1s(2)2s(2)2p (x)(2)' is not feasible since electron pairing in orbitals belonging to the same subshell '(p, d, or f') does not take place unital each orbital belonging to that subshell has one electron, 'i.e., it is singly occupied.