New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Which of the following is correct regarding isobars?

    I. They have different atomic numbers II. The have same mass numbers
    A Only I Correct Answer Incorrect Answer
    B Only II Correct Answer Incorrect Answer
    C Both I and II Correct Answer Incorrect Answer
    D Neither I nor II Correct Answer Incorrect Answer

    Solution

    Isobars have different atomic numbers because they have different numbers of protons. They have the same atomic mass because they have just enough neutrons to make the same total of nucleons.

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