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Which of the following has a pyramidal shape?

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Question: Which of the following has a pyramidal shape?

Options:

  1. CH4
  2. H2O
  3. NH3
  4. CO2

Correct Answer: NH3

Solution: 

NH3 has three bonding pairs and one lone pair, resulting in a trigonal pyramidal shape.

Which of the following has a pyramidal shape?

Practice Questions

Q1
Which of the following has a pyramidal shape?
  1. CH4
  2. H2O
  3. NH3
  4. CO2

Questions & Step-by-Step Solutions

Which of the following has a pyramidal shape?
  • Step 1: Identify the molecule in question, which is NH3 (ammonia).
  • Step 2: Determine the number of bonding pairs of electrons in NH3. There are three hydrogen atoms bonded to the nitrogen atom.
  • Step 3: Identify the number of lone pairs of electrons on the nitrogen atom. NH3 has one lone pair.
  • Step 4: Understand that the shape of a molecule is determined by the arrangement of bonding pairs and lone pairs of electrons.
  • Step 5: Recognize that NH3 has three bonding pairs and one lone pair, which leads to a trigonal pyramidal shape.
  • Step 6: Conclude that NH3 has a pyramidal shape due to the presence of the lone pair pushing down on the bonding pairs.
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