Question

What are isotopes give one example?

Answer 1

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 ${\mathrm{C}}_6^{12},{\mathrm{C}}_6^{13},{\mathrm{C}}_6^{14}$

Number of neutrons(n) = mass number(A) - atomic number(Z))

Therefore No. of neutrons in ${\mathrm{C}}_6^{12}$ = 12 - 6 = 6

No. of neutrons in ${\mathrm{C}}_6^{13}$ = 13 - 6 = 7

No. of neutrons in ${\mathrm{C}}_6^{14}$ = 14 - 6 = 8

Therefore, isotopes are differed by the number of neutrons.