MDCAT Chemistry MCQ #1755

In a molecule of hydrogen sulfide (H2S), the central atom contains two lone pairs. Calculate the total number of valence electrons used in these lone pairs.

MDCAT Chemistry MCQ #1755

  1. Question 1

    Q1. In a molecule of hydrogen sulfide (H2S), the central atom contains two lone pairs. Calculate the total number of valence electrons used in these lone pairs.

    • A) 2
    • B) 4
    • C) 6
    • D) 8

    Answer: 4

    Explanation: H2S has two lone pairs on the Sulfur atom; since each pair has 2 electrons, the total is 4. 2 is only the number of pairs.