Answer:
A lone pair of electrons accounts for one electron domain. In molecular geometry, an electron domain is any region in a molecule where electrons are found, including lone pairs and bonded atoms. The number of electron domains is used to determine the molecular shape of a molecule using VSEPR (Valence Shell Electron Pair Repulsion) theory. A lone pair, also known as a non-bonding pair, is a pair of valence electrons that are not involved in chemical bonding and are instead localized on a single atom.
Step-by-step explanation: