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A.
it is the weighted average mass of all its various isotopes
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B.
it is the average mass of all the isotopes of the element
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C.
the element has strong oxidizing ability
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D.
the atom contains a higher number of neutrons than protons
Correct Answer: Option B
Explanation
Chlorine is a mixture of two isotopes with different abundances. Its relative atomic mass is the mean or average of the isotopic masses.
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