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If the relative atomic mass of an element is not a whole number, it can be...

Chemistry
JAMB 2009

If the relative atomic mass of an element is not a whole number, it can be deduced that the element is?

  • A. Naturally radioactive
  • B. abundant in nature
  • C. a transition metal
  • D. an isotopic mixture
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Correct Answer: Option D
Explanation

This happens because the relative atomic mass is the average of all an element’s isotopes, weighted by how common each isotope is. If the isotopes have different masses, the average won’t be a whole number.

There is an explanation video available below.

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Explanation Video

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