Question

properties of isobars​

Answer 1

isobars have same mass number but different atomic number due to which they resemble difference in their chemical properties

Answer 2

Explanation:

Atoms of chemical elements having same atomic mass but a different atomic number are called Isobars. The sum of the number of protons and neutrons together form the atomic mass. Therefore, we can also say the number of nucleons present in the nucleus is equal to the atomic mass of an atom. It will have the same number of nucleons.

The number of protons and neutrons alone will vary but the number of nucleons or the sum of protons and neutrons in isobars will always be same. Isobars always have different atomic structure because of the difference in atomic numbers. The number of neutrons makes up the difference in the number of nucleons. Therefore, they are always different chemical elements having same atomic masses. Thus, isobar has different chemical properties.

Learn the concept of an Atomic number here.

By now we know that the atomic masses in isobars are same. Therefore, they have similar physical properties. For example, the isobars iron and nickel. Iron and nickel have atomic number 26 and 28 respectively. However, the mass number is 58.

Another example is argon and calcium with atomic number 18 and 20, respectively. However, they have the same atomic mass 40. Furthermore, sometimes there are series of an element that has same atomic mass. For example, Cobalt (Co), Nickel (Ni), Copper (Cu), and Iron (Fe) have same atomic mass 64 but the atomic number varies.

Examples

18Ar40 19K40 20Ca40

32 Ce76, 34Se76

11Na24 12Mg24

26Fe58, 27 Ni58

27Co64 28Ni64