Question

what is isotopes with diagram

Answer 1

Isotopes are atoms of the same element having the same numbers of protons, but different numbers of neutrons. They have same chemical properties due to the same electron configuration, but different physical properties. 

Answer 2

All the atoms of a given element have the same number of protons andelectrons. However, the number of neutrons can vary. Atoms of the sameelement that have different numbers of neutrons are called isotopes of that element.