MDCAT Chemistry MCQ #873

Which property differs between isotopes of the same element?

MDCAT Chemistry MCQ #873

  1. Question 1

    Q1. Which property differs between isotopes of the same element?

    • A) Atomic number
    • B) Chemical reactivity
    • C) Mass number
    • D) Valence electrons

    Answer: Mass number

    Explanation: Isotopes share atomic number and valence electrons. Mass number (C) varies due to neutron count differences.