1.

The triad of nuclei that represents isotopes is :

Answer»

`""_(6) C^(14) , ""_(7)N^(14) , ""_(9)F^(19)`
`""_(6)C^(12) , ""_(7) N^(14) , ""_(9) F^(19)`
`""_(6) C^(14) , ""_(6) C^(13) , ""_(6)C^(12)`
`""_(6) C^(14), ""_(7)N^(14) , ""_(9) F^(17)`

SOLUTION :Isotopes = same .Z.


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