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From kinetic theory, what was the size of an atom known to be?

AAbout 1 femtometre
BAbout 1 millimetre
CAbout 0.1 nanometre
DAbout 1 micrometre
Answer & Solution
Correct answer: C. About 0.1 nanometre
Kinetic theory gave an atomic size near 10^-10 m, which is 0.1 nm.
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