CHEMISTRY help :) PLEASEE?

A dative covalent bond or coordinate bond occurs when one atom in the molecule provides both the shared electrons in a covalent bond. An example of an ion that bonds providing no electrons itself is H+. If A is a full molecule being F-Cl-F-Al-P-Cl-F-Cl then it does contain dative covalent bonds between the F and Al as the Al would be sharing its 3 outer electrons with other atoms, meaning that the F has to share 2 of its electrons with Al to form the covalent bond. B is an ionic compound and dative covalent bonding only occurs in covalent molecules. In F2 both florine atoms provide 1 electron to share in the covalent bond so it's not coordinate covalent bonding. H2O is the same as hydrogen provides 1 electron to the covalent bond and oxygen the other one at both covalent bonds between H and O. HF also doesn't contain coordinate covalent bonding as the hydrogen provides 1 electron to the bond, and F the other.