1.

{:("i. "_(17)Cl^(35)","_(17)Cl^(37),"(a) Isotones"),("ii. """_(6)Cl^(13)","""_(7)N&(14),"(b) Isobars"),("iii. "_(18)Ar^(40)","_(20)Ca^(40),"(c) "E=mc^(2)),("iv. Einstein's equation","(d) Isotopes"):}

Answer»

SOLUTION :`i-d,ii-a,iii-b,iv-c`


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