_:vb50935517 . _:vb50935517 . "covalent bond"@en . _:vb50935517 . _:vb50935517 . . "A covalent bond is a strong submolecular interaction between atoms."@en . _:vb50935517 . "CHEMINF:000063" . _:vb50935517 ":arcc045b960" . . . "SIO_011118" . . _:vb50935517 "2"^^ .