Pharmacy Curriculum Outcomes Assessment (PCOA) Practice Exam

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What are enantiomers?

Mirror images
Isotopes
Ionic compounds
Covalent bonds

The correct answer is: Mirror images

Enantiomers are molecules that have the same chemical formula and connections between atoms, but they are mirror images of each other. This means that they have the same physical and chemical properties, except for the direction of rotation of light (optical activity). Isotopes, on the other hand, have the same number of protons but a different number of neutrons. Ionic compounds are formed between a metal and a nonmetal through the transfer of electrons, and covalent bonds are formed between two nonmetals through the sharing of electrons. These options are incorrect because they do not describe enantiomers correctly.