Learn how to predict the shape and polarity of molecules from Lewis structures, and see examples that walk through sample problems step-by-step for you to improve your chemistry knowledge and skills.
Learn to depict molecules and compounds using the Lewis structure. Explore the relationship between the octet rule, valence electron, and the...
Practice your understanding of Lewis structures with our quiz. The quiz can give you immediate results. You can also print the quiz and finish it...
Which of the Lewis structure is best at approximating the real situation becomes secondary, and it makes sense to move on from a Lewis structure model to more comprehensive models of bonding for species such as this one.
On a chemistry homework, we're asked to draw the Lewis structure of $\ce{N3-}$. My answer: Nitrogen ordinarily has five electrons in its valence; $\ce{N-}$ has six. This makes a total of 16 elect...
What is the octet rule? Learn the definition of octet rule and Lewis structure. See the rules for drawing Lewis structure and its dependency on the periodic table.
Learn about Lewis dot structures. Understand what a Lewis dot structure is and how to draw it, and practice drawing hydrogen, carbon, and other...
The structure on the left follows the octet rule for both atoms, whereas the one on the right has only six electrons associated with the carbon atoms. So if you only want to write a single Lewis structure, the one on the left is better. If you have space, write the pair of resonance structures with a double arrow ($\ce {<->}$) between them.
What is the molar mass of aluminum? See the aluminum chloride formula and its lewis structure and decomposition, and also see the uses of aluminum chloride.
Just as the Lewis dot structure can visualize molecules, it can also visualize polyatomic ions, which are ions containing multiple atoms. Explore the actions of polyatomic ions and learn how to ...