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The electronic configuration of an atom of Nitrogen is 1s\(^2\) 2s\(^2\) 2p\(^1_x\) 2p\(^1_y\) 2p\(^1_z\) because the atom...

Chemistry
JAMB 2024

The electronic configuration of an atom of Nitrogen is 1s\(^2\) 2s\(^2\) 2p\(^1_x\) 2p\(^1_y\) 2p\(^1_z\) because the atom is

  • A. in an excited state
  • B. undergoing energy changes
  • C. unstable and ready to combine with another
  • D. simply obeying rules governing electron configuration
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Correct Answer: Option D
Explanation

The rules governing electron configuration are the Aufbau principle, Pauli's exclusion principle, and Hund's rule: 

  • Aufbau principle: Electrons fill the lowest energy orbitals first. 
  • Pauli's exclusion principle: No two electrons can have the same spin in one orbital. Each orbital can hold a maximum of two electrons with opposite spins. 
  • Hund's rule: Electrons fill empty orbitals singly before pairing up in the same sub-levels.

There is an explanation video available below.

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Explanation Video

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