Notes for Quantum Mechanic and Electron Configuration
Chemistry
Date ______________ Period ______________
Person (s)
Democitus
Model Name and Sketch
Experiment and what was discovered
Dalton
Thomson
Rutherford
Bohr
Schrodinger
Heisenburg
Quantum Mechanics means that electrons exist within distinct energy levels
Why is quanta different than continuous?
Give an example of continuous data:
Give an example of discrete data:
Probability is a key to the newest or cloud model of the atom. What is the difference between probable and possible?
Explain how the example with finding a student in class works
N= principal quantum number which means
An example is
L= angular quantum number which means
Examples of L are
orbital (L)
s
sketch
where on p. table?
p
d
f
g
How many electrons can each orbital hold?
Ml = magnetic quantum number which shows the orientation (x, y, z etc) of the
orbital
s
orientation
number of orientations
p
p
p
d
d
d
d
d
f
g
Ms = spin quantum number
There are _____ electrons in every orbital. They have ___________ spins. By agreement, we give the first electron a
designation as ________________ and the second as _________________.
Electron Configuration
We use the _____________ method to fill the orbitals. This just means :
“House Model”
7
6
5
4
3
2
1
N
s
p
___rooms
Means
d
_____ rooms
means
f
______ rooms
=L
= Ml
= Ms
Why does 1s fill first?
Why are the d levels “dropped”?
Why are the f levels “fallen” out?
Where is g?
Periodic Table Blocks: Put the N (energy level), and L (orbital of s, p, d, f),
Each element has a ___________________ atomic number and _______________.
If two elements, like H and He, share the N, M and Ml quantum numbers then the __________ will be different.
The location of an element on the periodic table tell us the electron configuration and the electron configuration tell us
_____________________________________________________.
Examples: put the element name
1s2 2s2 2p2 valence is ___________ total electrons ___________
1s2 2s2 2p6 valence is ___________ total electrons _____________
1s2 2s2 2p6 3s1 valence is ___________ total electrons _________________
1s2 2s2 2p6 3s2 3p3 valence is ___________ total electrons _________ shorthand [
1s2 2s2 2p6 3s2 3p6 4s2 3d10 valence is ____ total electrons ________ shorthand [
Examples: put the superscript and cross out the orbitals with no electrons
H 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p valence is __________
He 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p valence is __________
Li 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p valence is __________
Na 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p valence is __________
Shorthand [
]
Al 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p valence is __________
Shorthand [
]
Ar 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p valence is __________
Shorthand [
]
Why is the atom a “fuzzy blob of uncertainty”?
What does electron configuration tell us that is useful?
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