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Which of the following make up an isoton...

Which of the following make up an isotonic triad?

A

`""_(32)^(78)Ge,""_(33)^(77)As,""_(31)^(74)Ga`

B

`""_(18)^(40)Ar,""_(19)^(40)K,""_(20)^(40)Ca`

C

`""_(92)^(233)U,""_(90)^(232)Th,""_(94)^(239)Pu`

D

`""_(6)^(14)C,""_(8)^(16)O,""_(7)^(15)N`

Text Solution

Verified by Experts

The correct Answer is:
D
`""_(6)^(14)C,""_(8)^(16)O,"_(7)^(15)N` = isotonic triad
Isotonic = same number of neutron.
All species contain 8 neutrons.
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