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Question

What do the raisins represent in Thomson’s plum-pudding model of the atom?

This question was previously asked in
RRB Group D 2025 Question Paper (18-Aug-2026) (Shift 1)
The correct answer is

Electrons embedded in positively charge sphere

In J.J. Thomson's plum-pudding model, the atom is a sphere of positive charge with electrons embedded in it.

The pudding stands for the positive charge and the raisins (plums) stand for the embedded electrons.

Neutrons and electron orbits were not part of this model.

Hence, the answer is electrons embedded in positively charge sphere.

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