Final answer:
In a double covalent bond, two pairs of electrons are shared between two atoms. An ionic bond involves the transfer of electrons, while a covalent bond involves the sharing of electrons.
Step-by-step explanation:
In a double covalent bond, two pairs of electrons are shared between two atoms.
An ionic bond is different from a covalent bond in that an ionic bond involves the transfer of electrons, while a covalent bond involves the sharing of electrons.