Question

What are Isotopes, Isobars and isotones?

Answer 1

1. Isotopes :

The atoms of an element having same atomic number (Z) but different mass numbers are called isotopes.
Ex: i) \(_{6}C^{12}, _6C^{13},_6C^{14}\)

2. Isobars:

The nuclei having same number of nucleons but different number of protons are called isobars.
Examples:  (i) \(_1H^3\ and\ _2He^3\) 
(ii) \(_6C^{14}\ and\ _7N^{14}\)

(iii) \(_8O^{17}\ and \ _9F^{17}\)

(iv) \(_{18}Ar^{40}, _{19}K^{40} \ and \ _{20}Ca^{40}\)

3. Isotones:

The nuclei containing the same number of neutrons are called isotones.

Ex: i) \(_1H^3, _2He^4\)

Answer 2

here is the answer to your question:-

Isotopes: They are elements of same atom with same atomic number but different mass number. Isotpes are chemically identical.

Isobars: They are atoms of different elements with same mass number but different atomic number. Isobars are chemically different.

Isotones: Atoms having same number of neutrons are called isotones.