What atoms form single covalent bonds?

Any atom that does not have a full shell of electrons (only atoms in group 18 have a full shell) can form a single covalent bond because a single covalent bond is a bond formed when two atoms share a pair of electrons.

When two s orbitals cross, a covalent bond is created. Since every atom has at least one electron in an s orbital, any atom can create a single covalent bond.

Atoms form single covalent bonds when they share one pair of electrons. This type of bond commonly occurs between two nonmetal atoms, such as hydrogen (H), oxygen (O), nitrogen (N), and carbon (C).

Atoms form single covalent bonds when they share one pair of electrons. This typically occurs between nonmetal atoms. Examples include hydrogen (H), oxygen (O), nitrogen (N), fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and carbon (C).