The set which represents the isotope, isobar and isotone respectively is

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Professor PC Thomas Classes · Answer

(d) : Nuclides with same atomic number $Z$ but different mass number $A$ are known as isotopes. Nuclides with same mass number $A$ but different atomic number $Z$ are known as isobars. Nuclides with same neutron number $N=(A-Z)$ but different atomic number $Z$ are known as isotones. ${ }_1 \mathrm{H}^2$ and ${ }_1 \mathrm{H}^3$ are isotopes ${ }_2 \mathrm{He}^3$ and ${ }_1 \mathrm{H}^3$ are isobars ${ }_{79} \mathrm{Au}^{197}$ and ${ }_{80} \mathrm{Hg}^{198}$ are isotones.
$\begin{aligned} & { }_1 \mathrm{H}^2 	ext { and }{ }_1 \mathrm{H}^3 	ext { are isotopes } \ & { }_2 \mathrm{He}^3 	ext { and }{ }_1 \mathrm{H}^3 	ext { are isobars } \ & { }_{79} \mathrm{Au}^{197} 	ext { and }{ }_{80} \mathrm{Hg}^{198} 	ext { are isotones. }\end{aligned}$