Question

Existence of positively charged nucleus was established by:

Options

• Positive ray analysis

• α-ray scattering experiments

• X-ray analysis

• Discharge tube experiments

Answer 1

α-ray scattering experiments

Explanation:

As per Rutherford’s a-ray scattering experiment, atomic nucleus was positively charged as alpha particles which are fired at the metal foils that are positively charged get repel. Alpha particles has two protons and two neutrons.