Question

How may sub-atomic particles are present in an $\alpha$-particles used in Rutherford's scattering experiment?

• A. No. of Protons - 4,
  No. of Neutrons - 0,
  No. of Electrons - 0
• B. No. of Protons - 2,
  No. of Neutrons - 0,
  No. of Electrons - 2
• C. No. of Protons - 2,
  No. of Neutrons - 2,
  No. of Electrons - 0
• D. No. of Protons - 2,
  No. of Neutrons - 2,
  No. of Electrons - 1

Answer 1

The correct option is C No. of Protons - 2,

No. of Neutrons - 2,
No. of Electrons - 0
Following sub-atomic particles are present in an alpha-particle (helium nucleus) used in Rutherford's scattering experiment.
Number of Protons $=$ 2,
Number of Neutrons $=$ 2,
Number of Electrons $=$ 0
Hence, the option C is the correct answer.