How to Draw the Lewis Structure for HClO2 Chlorous Acid

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A step-by-step explanation of how to draw the HClO2 Lewis Dot Structure (Chlorous Acid). • For the HClO2 structure use the periodic table to find the total number of valence electrons for the HClO2 molecule. Once we know how many valence electrons there are in HClO2 we can distribute them around the central atom with the goal of filling the outer shells of each atom. • In the Lewis structure of HClO2 structure there are a total of 20 valence electrons. HClO2 is also called Chlorous Acid. • Note that HClO2 can have an Expanded Octet and have more than eight valence electrons. Because of this there may be several possible Lewis Structures. To arrive at the most favorable Lewis Structure we need to consider formal charges. See how to calculate formal charges: • Formal Charges: Calculating Formal Ch... • ---- Steps to Write Lewis Structure for compounds like HClO2 ----- • 1. Find the total valence electrons for the HClO2 molecule. • 2. Put the least electronegative atom in the center. Note: Hydrogen (H) always goes outside. • 3. Put two electrons between atoms to form a chemical bond. • 4. Complete octets on outside atoms. • 5. If central atom does not have an octet, move electrons from outer atoms to form double or triple bonds. • ---- Lewis Resources ---- • • Lewis Structures Made Simple: • How to Draw Lewis Structures: Five Ea... • • More practice: • Lewis Dot Structure Practice Problems... • • Counting Valence Electrons: • Finding the Number of Valence Electro... • • Calculating Formal Charge: • Formal Charges: Calculating Formal Ch... • • Exceptions to the Octet Rule: • Exceptions to the Octet Rule • Lewis Structures, also called Electron Dot Structures, are important to learn because they help us understand how atoms and electrons are arranged in a molecule, such as Chlorous Acid. This can help us determine the molecular geometry, how the molecule might react with other molecules, and some of the physical properties of the molecule (like boiling point and surface tension). • Chemistry help at https://www.Breslyn.org

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