GENERAL KNOWLEDGE

Detailed explanation-1: -Soddy worked with Rutherford on the disintegration of radioactive elements. He was among the first to conclude in 1913 that certain elements might exist in forms that differ in atomic weight while being indistinguishable and inseparable chemically. These, upon a suggestion by Margaret Todd, he called isotopes.

Detailed explanation-2: -Soddy in his lab at the University of Glasgow. In a letter to the editor published in the Dec. 4, 1913, issue of Nature, English radiochemist Frederick Soddy proposed the isotope concept-that elements could have more than one atomic weight. The idea led to his 1921 Nobel Prize in Chemistry.

Detailed explanation-3: -Here he worked with Professor Sir Ernest Rutherford on problems of radioactivity. Together they published a series of papers on radioactivity and concluded that it was a phenomenon involving atomic disintegration with the formation of new kinds of matter.