Question

Give one example of isobars.

Answer 1

Definition of isobar

When two atoms of different elements have the same mass number but a different atomic number are called isobars.

Example of isobar

1. An example of isobar is: ${}_{19}{}^{40}K$ and${}_{20}{}^{40}Ca$.
2. Here ${}_{19}{}^{40}K$represents an atom of potassium and ${}_{20}{}^{40}Ca$ represents an atom of calcium.
3. In these two atoms the mass number is the same which is $40$ but the atomic number is different which is $19$ for potassium, $20$ for calcium. So these are termed isobars.

Final Answer

${}_{19}{}^{40}K$ and ${}_{20}{}^{40}Ca$are examples of isobar.