1. Bohr Diagrams or Shell Models11 Na
Sodium 23
Bohr Diagrams or Shell Models -
+11
Model of an atom which has a nucleus surrounded by electrons in their energy levels.
Water sugar salt
We are going to talk about bonding
Bonding between atoms is CIM
Why do 2h and OThere are several difference bond types in Chemistry.
All are concerned with electrons.
Intermolecular bonds occur between molecules (hydrogen bonding)

2. 2-8-8-2 rule 2 8 8 2 Put the number of protons in the nucleus.
First two electrons go in the first energy level or ring around the atom.
The next eight go into the next energy level and so on…
This works for the first 20 elements. 2 8 8 2
Water sugar salt
We are going to talk about bonding
Bonding between atoms is CIM
Why do 2h and OThere are several difference bond types in Chemistry.
All are concerned with electrons.
Intermolecular bonds occur between molecules (hydrogen bonding)

3. Valence Electrons
Electrons in the outermost ring are considered to be the most important because when two atoms come near one another it is these valence electrons and outer shells that interact.
Water sugar salt
We are going to talk about bonding
Bonding between atoms is CIM
Why do 2h and OThere are several difference bond types in Chemistry.
All are concerned with electrons.
Intermolecular bonds occur between molecules (hydrogen bonding)

4. Assignment 2-8-8-2 rule #VEs Hydrogen Helium Carbon Neon Chlorine Cl1-
Nitrogen
N3-
Li1+
Magnesium
Iron
Water sugar salt
We are going to talk about bonding
Bonding between atoms is CIM
Why do 2h and OThere are several difference bond types in Chemistry.
All are concerned with electrons.
Intermolecular bonds occur between molecules (hydrogen bonding)