Neutral atoms of the same element can differ in mass number.
ISOTOPES:
- Isotopes are atoms of the same element with same number of protons (atomic number) and identical chemical properties but different mass numbers.
- Isotopes of the same element differ in that they possess different number of neutrons, which is responsible for their difference in mass numbers.
- For example, isotopes of carbon include C-12 and C-14. Each of these isotopes have the same atomic number of 6 but different mass numbers of 12 and 14 respectively.
Therefore, neutral atoms of the same element can differ in mass number.
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