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Q. The orbital diagram in which both the Pauli exclusion principle and Hund's rule are violated is

NTA AbhyasNTA Abhyas 2022

Solution:

The orbital diagram in which both the Pauli exclusion principle and Hund's rule are violated is
Solution
The s-orbital is containing two electrons with parallel spins and in p-sub shell all the p-orbital are not first singly filled. According to Hund's rule, pairing starts only after equal energy orbitals get singly filled.