Monovalent elements are elements that have a valency of one, meaning they have one electron in their outermost shell that can be gained or lost during a chemical reaction. Some examples of monovalent elements include:

- Hydrogen (H)

- Lithium (Li)

- Sodium (Na)

- Potassium (K)

- Rubidium (Rb)

- Cesium (Cs)

- Francium (Fr)

- Copper (Cu) (in some compounds)

- Silver (Ag) (in some compounds)

- Gold (Au) (in some compounds)