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| $(i) \ _{26}Fe^{54}, \ _{26}Fe^{56}, \ _{26}Fe^{58}$ | $(a) \ \text{समस्थानिक}$ |
| $(ii) \ _1H^3, \ _2He^3$ | $(b) \ \text{समन्यूट्रॉनिक}$ |
| $(iii) \ _{32}Ge^{76}, \ _{33}As^{77}$ | $(c) \ \text{समइलेक्ट्रॉनिक}$ |
| $(iv) \ _{92}U^{235}, \ _{90}Th^{231}$ | $(d) \ \text{समभारिक}$ |
| $(v) \ _1H^1, \ _1D^2, \ _1T^3$ |
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