Friday, March 5, 2010

Bohr Model
- atoms are electrically neutral
-2 different models can be used to describe electron configuration : energy level model and bohr model
-electrons occupy shells which are divided into orbitals (orbitals always exist in pairs)
2e in 1st orbital, 8e in 2nd and 3rb orbital (octet)

EXAMPLES

Gold
bohr model:

energy level model:

6e-
2e-
8p+
O


aluminum
bohr model

energy level model:

3e-
8e-
2e-
13p+
Al


Orbital Shapes
atomic orbitals have a specific name and shape
1s / 2s look like this:

2px:


hybridized orbitals:
the 1st of the bohr levels is the 1st orbital and it holds 2e.
- the 2nd level contains 2s, 2px, 2py, 2p2 orbitals. they hybridize to form one 2sp3


here is an extremely educational video that will enlighten 13 minutes of your life about orbitals:

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