Structure Of Atom Question 1

Question 1 - 24 January - Shift 1

It is observed that characteristic X-ray spectra of elements show regularity. When frequency to the power ’ $n$ ’ i.e. $v^{\text{n }}$ of X-rays emitted is plotted against atomic number ’ $Z$ ‘, following graph is obtained.

The value of ’ $n$ ’ is (1) 1

(2) 2

(3) $\frac{1}{2}$

(4) 3

Show Answer

Answer: (3)

Solution:

Formula: Henry Moseley Equation

According to Henry Moseley $\sqrt{v} \alpha z-b$

So $n=\frac{1}{2}$