Question

Particles used in the Rutherford's scattering experiment to deduce the structure of atoms.

• A. Had atomic number $2$ and were fully ionised
• B. Had atomic number $2$ and were neutral
• C. Had atomic number $4$ and were fully ionised
• D. Had atomic number $4$ and were neutral

Answer 1

The correct option is A Had atomic number $2$ and were fully ionised

The particles used in Rutherford's scattering experiment are nuclei of helium atoms having large kinetic energy and, therefore, carry 2 units (2e) of positive charge and have the mass of helium atoms. These particles are fully ionized.