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| Column-$I$ | Column-$II$ |
| $A$. समस्थानिक (Isotopes) | $i$. $Li^7, Be^7$ |
| $B$. समभारिक (Isobars) | $ii$. $_8O^{18}, _9F^{19}$ |
| $C$. समन्यूट्रॉनिक (Isotones) | $iii$. $_1H^1, _1H^2$ |
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