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CHM 101 CHM 101 Past Questions Objective Question

Question

Who proposed that atoms of the same element are identical in size, mass, and chemical properties?
Options
A John Dalton
Correct Answer
B J.J. Thomson
C Ernest Rutherford
D Niels Bohr
Correct Answer

Option A is the correct answer.

Detailed Explanation

John Dalton's atomic theory (1808) included the postulate that all atoms of a given element are identical. This was a key departure from earlier philosophical ideas.

Hint

This scientist is credited with the first modern atomic theory based on experimental evidence.

Question Info