Exceptions to the Octet Rule
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There are many exceptions to
There are many exceptions to the octet rule that you should be aware of in chemistry. In this video we go through a list of exceptions with an explanation for each and examples.
Knowledge of these octet exceptions is important for drawing Lewis Structures. When drawing Lewis dot Structures that involve elements which may be exceptions to the octet rule, you can calculate the formal charges to be sure you have the best/most likely Lewis Structure for the compound.
----Lewis Resources----
• Lewis Structures Made Simple: https://www.seevid.ir/fa/w/1ZlnzyHahvo
• More practice: https://www.seevid.ir/fa/w/DQclmBeIKTc
• Counting Valence Electrons: https://www.seevid.ir/fa/w/VBp7mKdcrDk
• Calculating Formal Charge: https://www.seevid.ir/fa/w/vOFAPlq4y_k
• Exceptions to the Octet Rule: https://www.seevid.ir/fa/w/Dkj-SMBLQzM
--Steps to Write Lewis Structure--
1. Find the total valence electrons for the 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 Structures are important to learn because they help us understand how atoms and electrons are arranged in a molecule. 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/
7 سال پیش
در تاریخ 1396/09/09 منتشر شده
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