The approximate diameter of an atom is:
A$10^{-15}$ m
B$10^{-10}$ m
C$10^{-5}$ m
D$10^{-2}$ m
Answer & Solution
Correct answer: B. $10^{-10}$ m
Atomic diameter ≈ $10^{-10}$ m (1 ångström). The nucleus is about $10^{5}$ times smaller (~$10^{-15}$ m).
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