First Lesson

Today in class, we learned our first lesson in our new unit: Chemical Bonding. We first discussed the Lewis Dot Concept to illustrate chemical bonding. In one of these diagrams, you simply place electrons around the element symbol, making sure to fill each side of electrons first before pairing them up. Here is a chart that shows how this is done with different elements:

http://edtech2.boisestate.edu/lindabennett1/502/Compounds%20and%20Naming/Lewis%20Dot.html

The octet rule technically determines how many electrons are to be placed in the valence shell. An atom can not have more that 8 electrons total in their outer shell. However, there are exceptions. Hydrogen and Helium only have up to two valence electrons, boron requires 6 electrons to be stable, and beryllium only needs 4 electron to be stable. 

Another concept we learned today was how to solve electron dot formulas of molecules with the HAVE NEED SHARE method. Below is an example:

Here are a couple websites to further explain and practice these new concepts:

Purdue

Lewis Dot Structures

Practice Problems