Multiple choice

Which of the following elements tend to have their atomic masses in decimals?

  1. Elements having different isotopes

  2. Elements having different isobars

  3. Elements with variable valencies

  4. Elements with tendency to form cations

  5. Elements with tendency to form anions

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A Correct answer
Explanation

An element may have different isotopes. The mass of a natural element is taken as the average mass of all naturally occurring isotopes of that element.