Question

WHat is the difference between allotropes and isotopes?

Answer 1

Allotropes r elements that r present in more than one crystalline form... Isotopes r atoms of same elements with same atomic no. But different mass no.

Answer 2

Allotropes are different forms of same element, the mass is same.In contest,isotopes are same elements with different atoms,neutron number varies,so the mass is different.