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Atoms .(7)X^(A),.(8)Y^(B) and .(9)Z^(17)...

Atoms `._(7)X^(A),._(8)Y^(B)` and `._(9)Z^(17)` are such that `._(8)Y` is an isobar of `._(7)X` and atom `._(9)Z^(17)` is isotone of `._(8)Y`. Mass no. of `X` and no of neutrons in `Y` are respectively `:`

A

8,8

B

17,7

C

9,8

D

16,8

Text Solution

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The correct Answer is:
D
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