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Using Quantum Numbers
Identify and describe the quantum numbers and all possible values
Write electron configurations for any neutral atom or charged particle
Quantum Numbers-combinations of energy levels, cloud shapes, orientations, and electron
spin will describe the electron cloud where the probability of finding an electron exists.
Energy level
Orbital shapes
within
# orbitals
# electrons
Total electrons
in the energy
level
1
s
1
2
2
2
s, p
8
8
3
s, p, d
18
18
4
s, p, d, f
s-1
p-3
total = 4
s-1
p-3
d-5
total = 9
s-1
p-3
d-5
f-7
total = 16
32
32
Aufbau Principleelectrons will enter
orbitals of lowest
energy first.
How does electron configuration predict valence number?
T. O’Toole
Orbital Filling for Lithium
Pauli Exclusion Principle-No 2 electrons can have the same set of 4 QN (or when 2
electrons are in an orbital they must have opposite spins).
Electron Configuration for Lithium 1s2 2s1
Orbital Filling for Fluorine
Electron Configuration for Fluorine
1s2 2s2 2p2 2p2 2p1 or 1s2 2s2 2p5
Electron Configuration for Manganese
1s2 2s2 2p6 3s2 3p6 4s23d5
Electron Configuration for Bromine
1s2 2s2 2p6 3s2 3p6 4s23d104p5
How does electron configuration predict valence number?
T. O’Toole
Minute Paper
How do I get from where I am to where I’m going?
The 10 Minute Makeover
Customize your learning by choosing from the following options each night
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Complete the appropriate section on the Portfolio Page
Watch the videos showing how to use the periodic table to write an electron
configuration on the Video Resources tab of the Livebinder
Complete SYS Assignment related book work
Review the PPT file on the website
Read pages 367-369 in the book
Answer question #5 on page 369. The answer is in Appendix C.
Practice using: http://www.quia.com/jg/1258671.html, OR
http://www.quia.com/jg/1226712.html
Check out the tutorial resources in the LiveBinder like this:
http://electronconfiguration.info/
Review the skills from today’s Train Your Brain
How does electron configuration predict valence number?
T. O’Toole