# Are the electrons in a coordinate covalent bond donated by both the bonded atoms?

${H}_{3} N \left(a q\right) + {H}_{2} O \left(l\right) r i g h t \le f t h a r p \infty n s N {H}_{4}^{+} + H {O}^{-}$
The lone pair on ammonia is conceived to donate electrons to form a coordinate covalent bond with the proton. Of course in ammonium ion, $N {H}_{4}^{+}$, all of the $N - H$ bonds are equivalent, but nitrogen has a formal positive charge because its lone pair has been donated to ${H}^{+}$.