Question

When alpha particles are sent through a thin metal foil only one out of ten thousand of them rebounded. This observation led to the conclusion that

• A. Positively charged particle are concentrated at the center of the atom
• B. More number of electrons is revolving around the nucleus of the atom
• C. Unit positive charge is only present in an atom
• D. A massive sphere with more negative charge and unit positive charge is present at the center of the atom

Answer 1

The correct option is A

Positively charged particle are concentrated at the center of the atom

When alpha particles are sent through a thin metal foil only one out of ten thousand of them rebounded. this observation led to the conclusion that positively charged particle is concentrated at the centre of the atom. (nucleus).