GENERAL KNOWLEDGE

Detailed explanation-1: -A few positively charged alpha particles were deflected by small and large angles due to the presence of a heavy positive center. This positive center in the atom repelled the positively charged alpha particles and deflected them from their path. Rutherford named this positive center as nucleus.

Detailed explanation-2: -What is the Rutherford gold-foil experiment? A piece of gold foil was hit with alpha particles, which have a positive charge. Most alpha particles went right through. This showed that the gold atoms were mostly empty space.

Detailed explanation-3: -When alpha particles were bombarded on a gold foil, most of the alpha particles passed through undeflected. This result indicates that most of the volume of a gold atom consists of unoccupied space. This experiment is called the Rutherford experiment.

Detailed explanation-4: -The observation that most alpha particles passed straight through the gold foil led Rutherford to conclude that the positive charge in an atom is concentrated in a very small area that is called nucleus.

Detailed explanation-5: -In 1909, now at the University of Manchester, Rutherford was bombarding a thin gold foil with alpha particles when he noticed that although almost all of them went through the gold, one in eight thousand would “bounce” (i.e. scatter) back.