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Question

A molecule of ammonia (NH3) has:


  1. only single bonds

  2. only double bonds

  3. only triple bonds

  4. two double bonds and one single bond

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Solution

The correct option is A

only single bonds


Explanation for the correct option:

Option A: only single bonds

  • One molecule of ammonia contains one nitrogen atom and three hydrogen atoms.
  • Nitrogen has 5 valence electrons and each hydrogen has one valence electron.
  • Nitrogen shares one electron with each hydrogen, hence it forms a single bond with each hydrogen.
  • Therefore a molecule of ammonia contains single bonds only.
  • The structure of ammonia is:

  • Hence this option is correct.

Hence option A: only single bonds is the correct answer.


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