NEET Chemistry Thomson's Model Assertion Reason Question
Assertion (A): Thomson proposed that the atom consists of a uniform sphere of positive electricity with electrons embedded in it. | Reason (R): Rutherford's alpha-particle scattering experiment proved that the mass of the atom is concentrated in a small nucleus.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
Thomson's model proposed electrons in a positive sphere, but Rutherford's experiment showed that the positive charge and most of the mass are in a nucleus, not explaining Thomson's model directly.
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