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Chemistry · Structure of atom

हिन्दी

In Rutherford's \( \alpha \)-particle scattering experiment, what fraction of \( \alpha \)-particles were observed to bounce back, i.e., get deflected by nearly \( 180^\circ \)?

  1. A
    About 1 in 100
  2. B
    About 1 in 20,000
  3. C
    About 1 in 1,000
  4. D
    None of the \( \alpha \)-particles
View Answer & Solution

Correct answer · Option B

About 1 in 20,000

Explanation

Very few \( \alpha \)-particles (\( \sim 1 \) in 20,000) bounced back with a deflection of nearly \( 180^\circ \).

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