Question

What are isobars ?

Answer 1

Isobars are those elements which differ in the chemical property but have same physical property. So, we can say that isobars are those elements which have a different atomic number but the same mass number. Their chemical property is different because there is the difference in the number of electrons. It has same atomic mass but different atomic no. Because an additional number of neutrons compensates the difference in the number of nucleons.

Example of two Isobars is iron and nickel. Both have the same mass number which is 58 whereas the atomic number of iron is 26, and the atomic number of nickel is 28.