Bohr Models (I forgot to submit this last class)

-Atoms are electrically neutral

-Two Different models can be used to describe electron configuration.

1. Bohr Model
2. Energy Level Model

-Electrons occupy shells which are divided into orbitals

What information you need to make a model:

# of protons (atomic number)
# atomic mass
# of neutrons > this is found by subtracting the mass number by the atomic number.

Number of electrons each shell can contain (up to 4)
1. 2e
2. 8e
3. 8e
4. 18e

-Electrons are paired in Bohr Diagrams except on the first shell; they are on opposite sides.

Examples:

Bohr Diagram of sodium
http://www.green-planet-solar-energy.com/images/sodium-bohr.gif

Jomar Delos Santos