1.

C_(6)H_5F^(18) is a F^(18) radio - isotope labelled organic compound. F^(18) decays by positron emission. The product resulting on decay is

Answer»

`C_(6)H_(5)O^(18)`
`C_(6)H_5Ar^(19)`
`B^(12)C_(5)H_(5)F`
`C_(6)H_(5)O_(16)`

Solution :POSITRON emission :
`""_(9)F^(18) to ""_(8)E^(18) + ""_(1)e^(0)`
ATOMIC number 8 is for oxygen.
THUS, `""_(8)E^(18)` is `""_(8)O^(18), C_(6)H_(5)O^(18)` will be the PRODUCT after positron emission.


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