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The electronic configuration of an elements is 1s22s22p63s23p3. How many unpaired electrons are there in...

Chemistry
JAMB 1991

The electronic configuration of an elements is 1s22s22p63s23p3. How many unpaired electrons are there in the element?

  • A. 5
  • B. 4
  • C. 3
  • D. 2
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Correct Answer: Option C
Explanation

The atomic number of phosphorus is 15 and the 3p sublevel has three unpaired electrons.

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