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in Physics by (122k points)
निम्न में से कौन सा युग्म समन्यूट्रॉनिक है -
A. `""_(34)^(74)"Se",""_(31)^(71)"Ge"`
B. `""_(38)^(84)"Sr",""_(38)^(86)"Sr"`
C. `""_(42)^(92)"Mo",""_(40)^(92)"Zr"`
D. `""_(20)^(40)"Ca",""_(16)^(32)"S"`.

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