The element carbon (C) is most likely to form covalent bonds with the element

Carbon is a nonmetal and most commonly forms covalent bonds by sharing electrons with other nonmetals. Selenium is also a nonmetal, so carbon is most likely to form covalent bonds with selenium. Beryllium and sodium are metals, while krypton is a noble gas that is generally unreactive.

AI-written and checked against the verified answer.