Multiple Choice
In introductory chemistry, which statement best describes the difference between an atom and an ion?
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4. Atoms and Elements
Ions (Simplified)
Multiple Choice
In terms of subatomic particles, what makes an atom electrically neutral?
A
It has equal numbers of protons and neutrons.
B
It has no neutrons in its nucleus.
C
It has equal numbers of protons and electrons.
D
It has more electrons than protons.
Verified step by step guidance1
Recall that an atom is composed of three main subatomic particles: protons, neutrons, and electrons.
Understand the charges of these particles: protons carry a positive charge, electrons carry a negative charge, and neutrons are neutral (no charge).
Recognize that the overall electrical charge of an atom depends on the balance between the number of protons and electrons, since neutrons do not affect charge.
Conclude that for an atom to be electrically neutral, the number of positively charged protons must be equal to the number of negatively charged electrons.
Therefore, the correct condition for electrical neutrality is that the atom has equal numbers of protons and electrons.
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