Question

Find the best option among the following about the simplest unit of water that retains its properties :

• A. A molecule
• B. A mixture of compounds
• C. An isotope
• D. An isomer
• E. An acid salt

Answer 1

The correct option is A A molecule

A molecule is a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.

Thus, from a structural point of view, a molecule consists of an aggregation of atoms held together by valence forces. So, the simplest unit of water that retains its properties is a molecule.

Hence option $A$ is correct.