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NEET Chemistry QUESTION #7384
Question 1
Which of the following is a WRONG statement about nitrogen's atomic properties?
  • The electronic configuration of N has incorrect spin assignment in 2p orbitals as shown✔️
  • An orbital is designated by three quantum numbers; an electron by four
  • Total orbital angular momentum of an electron in s orbital equals zero
  • The value of \(m\) for \(d_{z^2}\) orbital is zero
Correct Answer Explanation
Hund's Rule: In the nitrogen atom, 2p subshell has 3 electrons — each goes into a separate orbital with parallel spins (↑↑↑), NOT with one paired. If the diagram shows pairing in 2p before all orbitals are singly occupied, it violates Hund's rule and is wrong.

Options (2), (3), and (4) are all correct statements. Angular momentum of s-electron = \(\sqrt{\ell(\ell+1)}\cdot\dfrac{h}{2\pi} = 0\) since \(\ell=0\).