Question

which is the only element in group 1 on the periodic table that forms covalent bonds? hydrogen lithium potassium sodium

Explanation:

• Group 1 elements (except hydrogen) are alkali metals. They have low ionization energies and tend to form ionic bonds by losing an electron.
• Hydrogen, although placed in group 1, is a non - metal. It can share electrons to form covalent bonds (e.g., in H₂O, CH₄).

Answer:

hydrogen