Multiple choice

Which of the following species contains three bond pairs and one lone pair around the central atom?

  1. Nh2

  2. Pcl3

  3. H2o

  4. Bf3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Phosphorus in PCl3 has 5 valence electrons. It forms 3 bonds with chlorine atoms, leaving one lone pair on the phosphorus atom.

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