The hydroxyl group is a functional group consisting of a hydrogen atom covalently bonded to an oxygen atom. The hydroxyl group is denoted by -OH in chemical structures and has a valence charge of -1. The hydroxyl radical is very reactive, so it quickly reacts with other chemical species.
What is the example of the hydroxyl group? A hydroxyl group is composed of one atom of hydrogen and one of oxygen. Alcohol is an example of a molecule that contains a hydroxyl group. Ethanol, methanol, isopropanol are some other examples of alcohol.
The hydroxyl group is the simplest of these common organic functional groups. It consists of a hydrogen atom attached to an oxygen atom with two distinct properties- its acidity (which can be measured by its pK value) and nucleophilicity, or how reactive it is with other molecules.