CN- Lewis Structure: How to Draw the Dot Structure for the CN-

Wayne Breslyn
Wayne Breslyn
242.1 هزار بار بازدید - 11 سال پیش - A step-by-step explanation of how
A step-by-step explanation of how to draw the CN- Lewis Dot Structure (Cyanide ion).

Note: there should be brackets around the final Lewis Structure with a -1 charge on the outside.

For the CN- structure use the periodic table to find the total number of valence electrons for the CN- molecule. Once we know how many valence electrons there are in CN- we can distribute them around the central atom with the goal of filling the outer shells of each atom.

In the Lewis structure of CN- structure there are a total of 10 valence electrons. CN- is also called Cyanide ion.

In order to make sure the outer shell of the Nitrogen atoms are full you will need to form a triple bond in this Lewis structure (between the Nitrogen and Carbon atoms).  By doing so both the  Nitrogen atom in Carbon atom in the Lewis structure for CN- will have octets.

---- Steps to Write Lewis Structure for compounds like CN -----
1. Find the total valence electrons for the CN- 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 are important to learn because they help us understand how atoms and electrons are arranged in a molecule, such as Cyanide ion. 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
11 سال پیش در تاریخ 1392/02/16 منتشر شده است.
242,184 بـار بازدید شده
... بیشتر