Question

What are isotopes ?​

Answer 1

Isotopes are atoms of same element (can be 2 or more) having same atomic number but different mass number. It's clear that it's because of no. Of protons and no. Of neutrons. So we can also say that, isotopes are atoms which have same number of protons (atomic number) and different neutrons (since proton + neutron = mass number).

Examples of isotopes :- carbon-12 , carbon - 13 and carbon - 14

Uses of isotopes :-

• isotpe of iodine is used to cure goitre.

• isotope of Cobalt is used to treat cancer.

Answer 2

Isotopes are the elements having same number of protons and different number of neutrons.