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The frequency of the characterstic X ray...

The frequency of the characterstic X ray of `K_(alpha)` line of metal targent 'M' is `2500 cm^(-1)` and the graoh between `sqrt(v)` Vs 'z' is as follows, then atomic number of M is

A

49

B

50

C

51

D

25

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The correct Answer is:
A
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