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Atoms of an element differing in mass are called:
AIsotopes
BIsobars
CIsomers
DIsotones
Answer & Solution
Correct answer: A. Isotopes
1. They belong to the same element.
2. Their nuclei hold the same number of protons.
3. They are isotopes.
_Source: NCERT Class 12 Physics, Ch 13 'Nuclei'_
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