JAMB Chemistry 2010 Objective — Question 7

Question 7 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2010 Objective paper, with the correct answer and a full explanation.

7. How many unpaired electron(s) are there in the nitrogen sub-levels? A. 1 B. 0 C. 3 D. 2

A. 1
B. 0
C. 3Correct
D. 2

Explanation

Nitrogen has the electron configuration 1s2 2s2 2p3, and Hund's rule shows the three 2p electrons are unpaired, each occupying a separate orbital.

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