What are isotopes give one example?

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Solution

Isotopes: The different atoms of the same element having the same atomic number but different mass numbers are known as isotopes.
Example: Isotopes of Carbon are represented as $C_{6}^{12}, C_{6}^{13}, C_{6}^{14}$
Number of neutrons(n) = mass number(A) - atomic number(Z))
Therefore No. of neutrons in $C_{6}^{12}$ = 12 - 6 = 6
No. of neutrons in $C_{6}^{13}$ = 13 - 6 = 7
No. of neutrons in $C_{6}^{14}$ = 14 - 6 = 8
Therefore, isotopes are differed by the number of neutrons.

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