Question

Henry Moseley’s law is given by the equation \(\sqrt{v}\) = a(Z – b). What do a and b represent here?

(a) The proportionality constant, screening constant

(b) Screening constant, proportionality constant

(c) Absorption constant, proportionality constant

(d) screening constant, Boltzmann constant

I had been asked this question in class test.

The above asked question is from Modern Periodic Law and the Present Form of the Periodic Table in chapter Classification of Elements and Periodicity in Properties of Chemistry – Class 11

Answer 1

The correct option is (a) The proportionality constant, screening constant

Best explanation: In the equation \(\sqrt{v}\) = a(Z – b), a represents proportionality constant and b represents screening constant.a and b are independent by not depending on the target’s nature. The above equation is the result of Henry Moseley’s law of the modern periodic table.