Atomic mass of an element is not necessarily a whole number becuase :
it contains electrons, protons and neutrons
it exists in all tropic forms
it contains isotopes
atoms are no longer indivisible
A
it exists in all tropic forms
B
it contains isotopes
C
atoms are no longer indivisible
D
it contains electrons, protons and neutrons
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Solution
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The reason the atomic mass is not a whole number is because it's the weighted average mass of the isotopes of that specific element.
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