# What are the isomers in relation to glucose, galactose, and fructose?

Glucose, galactose, and fructose are carbohydrates, and monosaccharides in particular. The isomers glucose, glactose, and fructose all have the same chemical formula, $\text{C"_6"H"_12"O"_2}$. They are structural isomers, which means that they have the same formula, but the way the elements are bonded is not the same.