Key Difference – Isotopes vs Isobars vs Isotones
Isotopes are atoms of the same chemical element having different numbers of neutrons. Therefore isotopes of the same chemical element have the same atomic number but different atomic masses. Isobars are atoms of different chemical elements. Therefore the atomic numbers are essentially different from each other. Isotones have the same number of neutrons in their atomic nucleus. The key difference between isotopes, isobars and isotones is that isotopes are atoms with the same number of protons, but differing numbers of neutrons and isobars are atoms of different chemical elements having equal values for atomic mass whereas isotones are atoms of different chemical elements having an equal number of neutrons in the atomic nucleus.
1. Overview and Key Difference
2. What are Isotopes
3. What are Isobars
4. What are Isotones
5. Side by Side Comparison – Isotopes vs Isobars vs Isotones in Tabular Form
What are Isotopes?
Isotopes are atoms with the same number of protons, but differing numbers of neutrons. A number of protons in the atom is the atomic number of that atom. A particular chemical element has a fixed number of protons. Hence, the atomic number of the atoms of the same chemical element is similar to each other. Therefore, isotopes are atoms of the same chemical element. The total number of protons and neutrons is known as the atomic mass. Isotopes have different atomic masses.
The chemical behaviour of isotopes of a chemical element is identical, but the physical properties are different from each other. Almost all the chemical elements have isotopes. There are 275 known isotopes of 81 stable chemical elements. For a particular chemical element, there are stable isotopes as well as radioactive isotopes (unstable).