Have 1 valence electron

Answer 1

The atoms with only 1 valence electron are the elements located on the very left of the periodic table, with atoms such as hydrogen, natrium and potassium. These are called alkali metals.

Answer 2

Atoms with 1 valence electron are typically found in Group 1 of the Periodic Table, known as the alkali metals. Examples include lithium, sodium, and potassium, all of which have one valence electron in their outermost energy level. This lone valence electron makes these elements highly reactive.

Answer 3

Any tetravalent element.