Exercise on Finding Finding configuration of an Excited Nitrogen Atom: Solutions

Question: Which one of the following configurations represents excited nitrogen atom 14N7?

  1. 1s2, 2s2, 2p1
  2. 1s2, 2s2, 2p2, 3s1
  3. 1s2, 2s2, 2p3
  4. [He]2s2, 2p3
Solution:
Normally, a ground state configuration should be:
7N: 1s2, 2s2, 2p3 to distribute the 7 electrons.
Hence, answer (B) is the correct answer, where one of the electrons was excited to the 3s orbital.


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Date of last modification: Summer , 2019