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MDCAT Chemistry QUESTION #4350
Question 1
Molecules having one lone pair and three bond pairs have geometrical shape:
  • Bent or angular
  • Trigonal
  • Trigonal pyramidal✔️
  • Trigonal planar
Correct Answer Explanation
According to VSEPR theory, a molecule with 3 bond pairs and 1 lone pair (e.g., $NH_3$) has a trigonal pyramidal shape. The lone pair repels bond pairs, pushing them downward.