Question

.Assertion: Atomic number is a more fundamental property of an element than its atomic

mass.

Reason: A plot of √V against atomic number(Z) gave a straight line and not the plot √V of

vs atomic mass​

Answer 1

Answer:

Moseley's law is an empirical law concerning the characteristic x-rays emitted by atoms. The law had been discovered and published by the English physicist Henry Moseley in 1913-1914.[1][2] Until Moseley's work, "atomic number" was merely an element's place in the periodic table and was not known to be associated with any measurable physical quantity.[3] In brief, the law states that the square root of the frequency of the emitted x-ray is approximately proportional to the atomic number.{\displaystyle \surd v\varpropto Z}{\displaystyle \surd v\varpropto Z}