Assertion: Isotopes of an element can be separated by using a mass spectrometer. \ Reason : Separat

Question

Assertion: Isotopes of an element can be separated by using a mass spectrometer. \ Reason : Separation of isotopes is possible because of difference in electron number of isotopes.

Professor PC Thomas Classes · Answer

(c) : Number of electrons in isotopes of an element is same. If two atoms have the same number of protons but different number of neutrons, their atomic (proton) number are equal but not their mass (nucleon) numbers. In mass spectrograph, the deflecting electric and magnetic fields were arranged so that all particles of the same mass, irrespective of their speed, were brought to a line focus. When ions of different mass were present, a series of lines, i.e., a mass spectrum, obtained on a photographic film. The relative intensities of the lines enabled an estimate to be made of the relative amounts of isotopes.