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Which of the following best describes anions?
A
Molecules that contain both positive and negative charges
B
Neutral atoms with equal numbers of protons and electrons
C
Ions with a positive charge formed by losing electrons
D
Ions with a negative charge formed by gaining electrons
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1
Understand that ions are atoms or molecules that have gained or lost electrons, resulting in a net electrical charge.
Recall that anions are specifically ions that carry a negative charge, which means they have gained one or more electrons.
Contrast anions with cations, which are ions with a positive charge formed by losing electrons.
Recognize that neutral atoms have equal numbers of protons and electrons, so they do not carry a charge.
Identify that molecules containing both positive and negative charges are called zwitterions or dipolar ions, which is different from the definition of anions.