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Question

Chemistry Question on Classification of elements & periodicity in properties

It is observed that characteristic XX-ray spectra of elements show regularity When frequency to the power " nn " ie vnv^n of XX-rays emitted is plotted against atomic number " ZZ ", following graph is obtained

A

2

B

3

C

1

D

12\frac{1}{2}

Answer

12\frac{1}{2}

Explanation

Solution

The correct answer is (D) : 12\frac{1}{2}
According to Henry Moseley vazb\sqrt{v}az-b
So n=12n=\frac{1}{2}