Identify an anion.
A) an atom that has lost an electron
B) an atom that has gained an electron
C) an atom that has lost a proton
D) an atom that has gained a neutron and a proton

Question

Quizplus · Accepted Answer

An anion is an atom that has gained one or more electrons, resulting in a negative charge. This differs from a cation, which is an atom that has lost one or more electrons, resulting in a positive charge. Option A (an atom that has lost an electron) actually describes a cation, not an anion. Options C and D are incorrect because they describe changes in the number of protons and neutrons, respectively, rather than electrons.

Identify an Anion