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orbitals and electron configuration

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by

Scott Glass

on 2 October 2013

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Transcript of orbitals and electron configuration

Orbitals
s
p
d
f
2e
6e
10e
14e
-
-
-
-
Electron Configuration
Important Facts
to be memorized
Energy Level
orbitals
orbital
# of sublevels
Order that Electrons Fill: 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d 7p
1s

2s 2p

3s 3p 3d

4s 4p 4d 4f

5s 5p 5d 5f

6s 6p 6d

7s 7p
n=1
n=2
n=3
n=4

s
sp
spd
spdf

1
3
5
7
s
p
d
f
!
!
Note:
Three pieces of information for each orbital
1.

2.

3.
Energy level
Sublevel shape
Number of electrons in that orbital
example:
3
3s
3s
2
You must be able to write these for our test next
tues/wed
.
They are used to describe where electrons
should be
around the nucleus of an atom.
because electrons are wierd
Because they behave like this we need to describe them with these orbitals
Now.
Lets try it.
H:

He:
Li:

C:
Br:

Fe:
O:

P:
The more electrons there are...
The longer the electron configuration
Afterwards, complete this

electron configuration
and
Auf bau diagrams
1. electrons will fill the lowest energy orbital available

2. electrons will fill one sublevel before filling the next and pairs will have opposite spin(Hund's rule)

3. electrons will fill the same sublevel one orbital at a time, but different orbitals will have the same spin
(Pauli exclusion principle)

Pg 271 1-7
Pg 308 35-44
Full transcript