Which statement describes the structure of an atom?

June 2017 NY Regents Chemistry Exam

1 Which statement describes the structure of an atom?

(1) The nucleus contains positively charged electrons.

(2) The nucleus contains negatively charged protons.

(3) The nucleus has a positive charge and is surrounded by negatively charged electrons.

(4) The nucleus has a negative charge and is surrounded by positively charged electrons.

Solution: The nucleus contains protons (positively charged) and neutrons (neutral). Negatively charged electrons are located outside of the nucleus.

Answer: 3

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