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# In Moseley’s equation $\sqrt v = a\left( {Z - b} \right)$ A.b depends on metal and a is independent of metalB.both a and b are metal dependentC.both a and b are independent of metalD.a is metal dependent while b is not

Last updated date: 22nd Jun 2024
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Hint: Moseley’s law is derived from Bohr’s atomic theory. And hence similar to the atomic theory of Bohr, it also deals with the frequency of the x rays emitted by the atoms under study. It also manages to establish a relationship between the atomic number and the corresponding x-ray frequency of the atom.

Henry Moseley was a scientist who found that this system is flawed and wanted to bring out a uniformity while arranging the element in the periodic table. Moseley studied the characteristic X – rays of the various elements that were discovered till then. He rearranged the element in the periodic table atomic to the results obtained from these x - ray characteristics. He then stated that the basis of this rearrangement was a property he termed to be the atomic number of the element. He characterised this property on the basis of the equation: $\sqrt v = a\left( {Z - b} \right)$ .