In H-F bond formation, the fluorine atom complete its _by acquiring a share of electron from hydrogen.

Explanation

During the formation of the HF bond, the fluorine atom completes its outermost shell by acquiring a share of electrons from hydrogen. The electronic configuration of fluorine is 1s² 2s² 2p⁵. The orbital that is completed by the fluorine atom is the 2p orbital. The fluorine atom has seven valence electrons in its outermost shell, and it needs one more electron to complete its octet. The hydrogen atom has one valence electron, which it shares with the fluorine atom to form the HF molecule. The shared pair of electrons is located in the 2p orbital of the fluorine atom, forming a covalent bond. The fluorine atom now has eight electrons in its outermost shell, which satisfies the octet rule.