Question

Which of the following statements you think is wrong regarding α particle scattering effect?

(a) α particles mostly move through the gold foil having zero deflection

(b) A small fraction are deflected

(c) One in Twenty Thousand turns 180°

(d) The thickness of the gold foil is about 100μm

The question was asked in quiz.

I'd like to ask this question from Atomic Models in portion Structure of Atom of Chemistry – Class 11

Answer 1

The correct option is (d) The thickness of the gold foil is about 100μm

To explain I would say: In this effect, a thin foil (thickness 100nm) made up of gold and coated with fluorescent ZnS screen which is circular around it. α particles mostly move through the gold foil having zero deflection, a small fraction is deflected and one in twenty thousand turns 180°.