Question

what is ment by isotops?

Answer 1

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.

"some elements have only one stable isotope"

hope it helps u!!!

Answer 2

$\huge \mathfrak {Answer:-}$

$\bold{Isotopes}$ are defined as atoms of same element having the same atomic number, but different mass numbers.

These atoms contain an $\bold{equal\:number\: of \:protons\:and\:electrons,}$ but a different number of neutrons.

$\huge \text{Be\:Brainly}$❤️