Which statement best describes a simple formula?

Which statement best describes a simple formula?

• A. It tells the type and number of atoms
• B. It shows how atoms are bonded
• C. It shows the exact arrangement in space
• D. It indicates the charge on ions

Answer: (A)

A simple formula communicates which elements are present and how many atoms of each there are. It tells you the composition of the substance, for example, two hydrogens and one oxygen in water. It doesn’t show how atoms are connected (that would be a structural or condensed formula), nor the three‑dimensional arrangement in space, nor any ionic charges. Those details require different representations, so the simple formula is best described as a record of which types of atoms and their numbers, not how they are bonded or arranged.

A simple formula communicates which elements are present and how many atoms of each there are. It tells you the composition of the substance, for example, two hydrogens and one oxygen in water. It doesn’t show how atoms are connected (that would be a structural or condensed formula), nor the three‑dimensional arrangement in space, nor any ionic charges. Those details require different representations, so the simple formula is best described as a record of which types of atoms and their numbers, not how they are bonded or arranged.