In Moseley's experiment, the frequency of emitted X-rays () is related to the atomic number () of th — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

Moseley bombarded high-speed electrons on different metal surfaces and obtained X-rays. He formulated the relationship $\sqrt{ u} = a(Z - b)$, where $a$ and $b$ are constants. Thus, a plot of $\sqrt{ u}$ against $Z$ yields a straight line, proving that atomic number, not atomic weight, is the fundamental property of an element.