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Which one is a wrong statement?

1. Total orbital angular momentum of electron in 's' orbital is equal to zero
2. An orbital is designated by three quantum numbers while an electron in an atom is designated by four quantum numbers
3. The value of m for dₓ²₋y² is zero
4. The electronic configuration of N atom is 1s² 2s² 2p¹ₓ 2p¹ᵧ 2p¹z

Correct answer: The electronic configuration of N atom is 1s² 2s² 2p¹ₓ 2p¹ᵧ 2p¹z

Solution

The electronic configuration of nitrogen (N) is 1s² 2s² 2p³, where the three electrons in the 2p subshell are unpaired and occupy different orbitals with parallel spins, as per Hund's rule. The given configuration violates this rule.

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