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    Question

    Which element of Group 17 has two isotopes of masses 35

    and 37 amu with average abundance of 75.77% and 24.23%, respectively?
    A Chlorine Correct Answer Incorrect Answer
    B Iodine Correct Answer Incorrect Answer
    C Fluorine Correct Answer Incorrect Answer
    D Astatine Correct Answer Incorrect Answer

    Solution

    Chlorine is the element of Group 17 that has two isotopes of masses 35 and 37 amu. The average abundance of the isotopes is 75.77% for 35 amu and 24.23% for 37 amu. Chlorine has the atomic number 17 and its chemical symbol is Cl.

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