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Suppose a gaseous mixtures of He, Ne, Ar...

Suppose a gaseous mixtures of `He, Ne, Ar ` and `Kr` is irradiated with photons for frequency appropriate to ionize Ar, What ions will be present in the mixture ?

A

`He^(+)` only

B

`Ne^(+)` only

C

`He^(+) , Ne^(+) , Ar^(+)` only

D

`Ne^(+) , Kr^(+) , Ar^(+) ` only

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The correct Answer is:
D
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