Question

Which of the following are isotopes and which are isobars? Argon, Protium, Calcium, Deuterium. Explain why the isotopes have similar chemical properties but they differ in physical properties?

Answer 1

Argon and calcium are isobars as they have same mass number that is 40 but different atomic numbers.
While protium and deuterium are isotopes as they same atomic number but different mass numbers.
Isotopes have similar chemical properties as there is no change in their electronic configuration.

Answer 2

Answer:

Here is your answer mate,

Argon and calcium are isobars having same mass number and different atomic number.While protium and deuterium are isotopes having same atomic number and different mass number