Metalloids — Unit test

Question 1 • GA-GSE Physical Science A

What is an atomic nucleus?

Answer

the outer part of an atom in which electrons move

the outer part of an atom in which neutrons move

the central part of an atom, composed of protons and neutrons

the central part of an atom, composed of protons and electrons

Explanation

An atomic nucleus is the tiny central part of an atom. It contains protons and neutrons; electrons move around the nucleus. Therefore, the correct choice is “the central part of an atom, composed of protons and neutrons.”

AI-written and checked against the verified answer.

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