if the frequency of Ka X-ray emitted fro...

if the frequency of `K_a` X-ray emitted from the element with atomic number 31 is f, then the frequency of `K_a` x-ray emitted from the element with atomic number 51 would be

A

`(5)/(3)f`

B

`(51)/(31)f`

C

`(9)/(25)f`

D

`(25)/(9)f`

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The correct Answer is:

D

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