Question detail

What is the radius of an atom approximately?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

Question

A. 1 x 10^-10 m
B. 1 x 10^-14 m
C. 1 x 10^-12 m
D. 1 x 10^-16 m

Answer

1 x 10^-10 m

Explanation

Atoms are very small, with a radius of about 0.1 nm, which is approximately 1 x 10^-10 m.

Common mistake

Nucleus Size Misconception

Students often think that the nucleus and the atom are similar in size.

Emphasize that the nucleus is much smaller than the entire atom, with a radius of about 1 x 10^-14 m compared to the atomic radius of about 0.1 nm (1 x 10^-10 m).

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