Question

classification of nuclei​

Answer 1

Classification of nuclei :

(i) Isotopes :

Isotopes are atoms of the same element having the same atomic number Z but different mass number A. The nuclei 1H 1, 1H2 and 1H3 are the isotopes of hydrogen. In other words isotopes of an element contain the same number of protons but different number of neutrons. As the atoms of isotopes have identical electronic structure, they have identical chemical properties and placed in the same location in the periodic table.

(ii) Isobars:

Isobars are atoms of different elements having the same mass number A, but different atomic number Z. The nuclei 8O16 and 7N16 represent two isobars. Since isobars are atoms of different elements, they have different physical and chemical properties.

(iii) Isotones:

Isotones are atoms of different elements having the same number of neutrons. 6C14 and 8O16 are some examples of isotones.

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