
Drawing Lewis diagrams (video) | Khan Academy
A Lewis diagram shows how the valence electrons are distributed around the atoms in a molecule. Shared pairs of electrons are drawn as lines between atoms, while lone pairs of …
Drawing dot structures (video) | Khan Academy
We move on to step two, where we decide on the central atom of our dot structure. And the way to do this is to pick the least electronegative element that we have here, and then draw the …
Lewis diagrams for molecules (video) | Khan Academy
Lewis diagrams (or Lewis structures) are models that show how atoms are bonded together in a molecule and the arrangement of valence electrons around the atoms in that molecule.
Worked example: Lewis diagram of formaldehyde (CH₂O)
The Lewis diagram of a molecule can be constructed using the following stepwise procedure: (1) Find the number of valence electrons in the molecule. (2) Draw single bonds between bonded …
Lewis diagrams for atoms and ions (video) | Khan Academy
Lewis diagrams of atoms show the element's symbol surrounded by dots representing valence electrons. For monatomic ions, Lewis diagrams also includes brackets and the ion's charge.
Dot structures I: Single bonds (video) | Khan Academy
Now when you're drawing dot structures, you don't always have to do this step where you're drawing each individual atom and summing all of your valence electrons that way.
Bond-line structures (video) | Khan Academy
So, let's start this video by taking this Lewis dot structure and turning into a bond line structure. If you look at the drawing on the left it implies that these three carbons are in a perfectly straight …
Condensed structures (video) | Khan Academy
If we want to expand it even more, and draw the full Lewis structure, again we start with the carbon in red. So here's the carbon in red, and that carbon is bonded to another carbon and …
Worked example: Lewis diagram of the cyanide ion (CN⁻)
We can draw Lewis structures for polyatomic ions (ions containing multiple atoms) using the same stepwise procedure as for neutral molecules. In this video, we'll see how to construct the …
Covalent bond and Lewis dot structure (H2O & CO2) - Khan …
Covalent bond and Lewis dot structure (H2O & CO2) | Chemistry | Khan Academy - YouTube