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Identify the paris which are not of isot...

Identify the paris which are not of isotopes?

A

`._(6)^(12)X,._(6)^(13)Y`

B

`._(17)^(35)X,._(17)^(37)Y`

C

`._(6)^(14)X,._(7)^(14)Y`

D

`._(4)^(8)X,._(4)^(9)Y`

Text Solution

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The correct Answer is:
D
Isotopes have same atomic number but different mass number
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