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Solid targets of different elements are ...

Solid targets of different elements are bombarded by highly energetic electron beam. The frequcny `(f)` of the characteristic `X`-rays emitted from different targets varies with atomic number `Z` as

A

`f prop sqrt(Z)`

B

`f prop Z`

C

`f prop Z^(2)`

D

`f prop Z^(1//3)`

Text Solution

Verified by Experts

The correct Answer is:
C
Moseley law is an empirical law concerning the characteristic electromagnetic spectrum that is abosered or emitted by atoms.
Using `X`-ray diffraction tenchniques Moseley found that most intense short wavelength line in the `X`-ray spectrum of a particular element is related to the element's atomic number `Z` as follows
`f = (2.48 xx 10^(15)) (Z -1)^(2) Hz`
`rArr f prop Z^(2)`
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