what group is hydrogen in

Hydrogen is placed at the top of Group 1A in most versions of the periodic table. However, it is not technically an alkali metal since it rarely exhibits similar behavior/Descriptive_Chemistry/Elements_Organized_by_Group/Group_01%3A_Hydrogen_and_the_Alkali_Metals). Hydrogen is a nonmetallic element that readily forms a single covalent bond with most nonmetallic elements, forming compounds such as water and nearly all organic compounds. It can also bond to metal atoms, such as lithium and calcium. Although hydrogen is placed in Group 1A, it is very different from the other members of the alkali metal group.