In terms of electrons, what is the difference between a covalent and ionic bond

An ionic bond essentially donates an electron to the other atom participating in the bond, while electrons in a covalent bond are shared equally between the atoms. Ionic bonds form between a metal and a nonmetal. Covalent bonds form between two nonmetals

10 years is the answer

fe 55.85 g/mol and h2o 18.02 g/mol.