Some compounds feature two-atom covalent [koh-VAY-lent] bonds in which both electrons forming the bond are donated by one of the atoms, also known as a dative bond.

Which of the following bonds is most likely to be a dative bond?

W) Carbon-carbon

X) Sodium-fluorine [FLOOR-een]

Y) Nitrogen-boron

Z) Hydrogen-chlorine
Y) NITROGEN-BORON