Question

In Moseley's law $\sqrt{v}=a(z-b)$, the values of the screening constant for K-series and L-series of X-rays are respectively :

• A. 1, 4
• B. 4, 6
• C. 2, 4
• D. 1, 6.4

Answer 1

Answer: (D)

1, 6.4

Moseley' law is an empirical law concerning the characteristic x-rays that are emitted by atoms.

The screening constant for K-series of X-rays is 1 and for L-series is 6.4.