In simple terms, that assertion is correct, but for those with an expertise in the field, the longer answer to who did it ...

Physicists from both New Zealand and Britain have been credited with splitting the atom — but there is consensus that it was not an American.

1. Choose the correct alternative from the clues given at the end of each statement: (a) The size of the atom in Thomson’s model is ..... the atomic size in Rutherford’s model.