Question

Distinguish isotopes from isobars.

Answer 1

Sr. No.	Isotopes	Isobars
1.	Isotopes are atoms of the same element, thus having same atomic number but different mass number.	Isobars are such atoms which have same mass but different atomic numbers. Thus isobars are different elements.
2.	Example: Hydrogen has three isotopes protium, with deuterium, tritium atomic number 1 but mass number 1, 2, 3.	Example: Calcium and Argon are isobars as they have atomic number 20 and 18 but their mass number are 40.