Question

exam lesson name: electricity and electronics
exam number: 700798rr
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question 6 of 20 :
select the best answer for the question.

1. an example of an atom that has no charge is one that has

○ a. 1 proton, 2 electrons, and 3 neutrons.
○ b. 2 protons, 2 electrons, and 1 neutron.
○ c. 3 protons, 2 electrons, and 1 neutron.
○ d. 3 protons, 1 electron, and 3 neutrons.
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Explanation:

To determine a neutral (no charge) atom, the number of protons (positive charge) must equal the number of electrons (negative charge). Neutrons have no charge.

• Option A: 1 proton, 2 electrons → unequal, so charged.
• Option B: 2 protons, 2 electrons → equal, so neutral.
• Option C: 3 protons, 2 electrons → unequal, charged.
• Option D: 3 protons, 1 electron → unequal, charged.

Answer:

B. 2 protons, 2 electrons, and 1 neutron.