please help solve all Unshared, or lone, electron pairs play an important role in determining the chemical and physical properties of organic compounds. Thus, it is important to know whichatoms carry unshared pairs.Use the structural formulas below to determine the number of unshared pairs at each designated atom.Be sure your answers are consistent with the formal charges on the formulas.H₂C aH₂CНОbHCHThe number of unshared pairs at atom a isThe number of unshared pairs at atom b isThe number of unshared pairs at atom c isThe number of unshared pairs at atom a isThe number of unshared pairs at atom b isThe number of unshared pairs at atom c is

Lewis’s bonding theory is based on the octet rule. The Lewis structure is a simplified representation of the valance shell electrons (bond pair and lone pair or unshared pair) of a molecule.In the Lewis structure, the valance electrons are represented by the dot. The lone pair of electrons is represented by a pair of dots and the bonding electron pair can be represented by the pair of dots between the atoms or by a bond line.Lewis’s structure of compound I showing all lone pairs is as follows:In this molecule only oxygen atom has two unshared pairs of electrons. Hence the correct answer is as follows:Please note: The carbocation (atom c) has only three bond pairs and a vacant orbital.Lewis’s structure of compound II showing all lone pairs is as follows:In this molecule only oxygen atom has two unshared pairs of electrons. Hence the correct answer is as follows:Please note: The carbanion (atom b) has three bond pairs and a lone pair of electrons and its octet is completed.Hence we can conclude that the oxygen atom has two bond pairs and two lone pairs of electrons. The neutral carbon atom has four bond pairs and the positively charged carbon atom has three bond pairs and the negatively charged carbon has three bond pairs and a lone pair of electrons.