JEE Main Chemistry question

Chemistry Structure of Atom JEE Main

When a gold sheet is bombarded by a beam of -particles, only a few of them get deflected, whereas most go straight undeflected. This is because

(A)The force of attraction exerted on the -particle by electrons is insufficient
(B)The volume of the nucleus is smaller than that of the atom
(C)The force of repulsion acting on a fast-moving -particle is very smallCorrect
(D)The neutrons have no effect on the -particle

Answer: (C)

Solution

Since the Coulombic repulsive force between the positively charged nucleus and an incoming -particle falls off rapidly with distance, only the rare -particle that happens to approach very close to a

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Question ID VK-132340