Isotopes have the same _ number but different _ numbers.

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Solution

Isotopes are defined as the atoms of the same element, having the same atomic number but different mass numbers.

The number of protons in all the atoms of a particular element is same, therefore to have different mass numbers, isotopes contain different number of neutrons.

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Similar questions

Isotopes have same........... number but different ................. number.

_{6}^{13} C

_{6}^{14} C

Nuclei with the same number of protons but a different number of neutrons are called isobars

Nuclei with the same number of neutrons but a different atomic number are called isotopes

Nuclei with the same mass number are called isotones

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