Explain with examples (i) Mass number, (ii) Isotopes and (iii) Isobars.
Answers
Mass number
The number of protons and neutrons combined to give us the mass number of an atom. ... As both protons and neutrons are present in the nucleus of an atom, they are together called nucleons. For example, an atom of carbon has 6 protons and 6 neutrons. Thus, its mass number is 12.
Isotopes
The number of nucleons (both protons and neutrons) in the nucleus is the atom's mass number, and each isotope of a given element has a different mass number. For example, carbon-12, carbon-13, and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13, and 14, respectively.
Isobars
Isobars are atoms (nuclides) of different chemical elements that have the same number of nucleons.... An example of a series of isobars would be 40S, 40C1, 40Ar, 40K, and 4°Ca. While the nuclei of these nuclides all contain 40 nucleons, they contain varying numbers of protons and neutrons.
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