What is the molecular geometry of NH3?

Practice Questions

Q1
What is the molecular geometry of NH3?
  1. Linear
  2. Trigonal planar
  3. Tetrahedral
  4. Trigonal pyramidal

Questions & Step-by-Step Solutions

What is the molecular geometry of NH3?
  • Step 1: Identify the chemical formula, which is NH3 (ammonia).
  • Step 2: Count the number of nitrogen (N) and hydrogen (H) atoms. There is 1 nitrogen and 3 hydrogens.
  • Step 3: Determine the number of bonding pairs. Nitrogen forms 3 bonds with the 3 hydrogen atoms.
  • Step 4: Check for lone pairs on the nitrogen atom. Nitrogen has 5 valence electrons and uses 3 for bonding, leaving 1 lone pair.
  • Step 5: Combine the bonding pairs and lone pairs. There are 3 bonding pairs and 1 lone pair.
  • Step 6: Use VSEPR theory to determine the shape. With 3 bonding pairs and 1 lone pair, the shape is trigonal pyramidal.
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