What is the difference between isobar and isotone

Selenium Se. Ge and Se are isotones. The atoms of different elements have the same difference of the neutrons and protons. As you can see in eq 1 and eq 2 that the difference between the neutrons and protons for Thorium and Uranium are the same. Hence we can say that these two elements are isodiaphers. Here, we can see that the difference is the same, i. Hence fluorine and sodium are isodiaphers. Isomer is a Greek word, which means having equal share or part. In nuclear physics, any two or more nuclei that possess the same number of neutrons and protons and mass number, however, exist in different energy states and have different radioactive properties.

It can also be said that the nuclei exist in any of several energy states for a measurable period of time. 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 known isotopes of 81 stable chemical elements. For a particular chemical element, there are stable isotopes as well as radioactive isotopes unstable. An isotope is named using the name of the chemical element and the atomic mass of the isotope.

Some examples of isotopes are given below. Isobars are atoms of different chemical elements having equal values for atomic mass. Atomic mass is the sum of protons and neutrons in the nucleus of an atom. A proton or a neutron is known as a nucleon. Therefore, isobars have the same number of nucleons. The atomic numbers of these isobars are different from each other because different chemical elements have different atomic numbers. The Mattauch isobar rule states that if two adjacent elements on the periodic table have isotopes of the same mass number isobars , one of these isotopes must be radioactive.

If there are isobars of three sequential elements exist, first and last isobars are stable, and the middle one may undergo radioactive decay. An isobar series is a collection of different isotopes that have the same atomic mass. Save Another example of isotopes is carbon isotopes. Carbon has three isotopes — Carbon , Carbon , and Carbon The atomic number for these atoms is 6.

So, the number of neutrons are 6, 7, and 8 respectively. Save Another common example of isotopes is hydrogen isotopes. The atomic number for these atoms is 1. Isobars are atoms of different chemical elements that have different atomic numbers but the same mass number i. For example, sodium- 24 and magnesium have different atomic numbers, i.

But the same mass number, i. So, these are two isobars. Save Another example of isobars are -argon, potassium, calcium, sulphur, chlorine So, these are isobars of each other.