MDCAT Chemistry MCQ #1769

During a VSEPR theory demonstration, a student models Ammonia (NH3). What is the observed bond angle resulting from lone pair-bond pair repulsion?

MDCAT Chemistry MCQ #1769

  1. Question 1

    Q1. During a VSEPR theory demonstration, a student models Ammonia (NH3). What is the observed bond angle resulting from lone pair-bond pair repulsion?

    • A) 109.5 degrees
    • B) 104.5 degrees
    • C) 107.5 degrees
    • D) 120.0 degrees

    Answer: 107.5 degrees

    Explanation: NH3 has 107.5 degrees due to lone pair-bond pair repulsion; CH4 is tempting but its 109.5 degrees is perfectly tetrahedral without lone pairs.