🤔Why are bond angles of H2O & NH3 104.5 and 107.5? According to valence shell electron pair repulsion theory,two types of electron pairs are present around the central atom. 1.Lone pair 2.Bond pairso: What is lone pair and bond pair of electrons? In simple words ,lone pair is the unshared pair of electron and theWhy are bond angles of H2O & NH3 104.5 and 107.5?