Question

Rutherford's scattering formula fails for very small scattering angles because:

• A. the gold foil is very thin
• B. the kinetic energy of $\alpha$-particles is very high
• C. the full nuclear charge of the target atom is partially screened by its electron
• D. there is strong repulsive force between the $\alpha$-particles and nucleus of the target

Answer 1

Answer: (C), (D)

The correct options are
C the full nuclear charge of the target atom is partially screened by its electron
D there is strong repulsive force between the $\alpha$-particles and nucleus of the target

Rutherford's scattering formula fails for very small scattering angles because:

$\left(1\right)$The full nuclear charge of the target atom is partially screened by it's electron

$\left(2\right)$there is strong repulsive force between the $\alpha$particles and nucleus of the target.