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Transcript
Name:______________________________________________________ Date:___________________________________________ Blk:_____
The Quantum Numbers
Schrodinger’s equation produces four quantum numbers that are needed to describe each electron within an atom. The first
three quantum numbers denote the size, shape, and orientations in space of the orbital. The fourth denotes the direction of
the electron spin.
Name and Symbol
Principle Quantum
Number (n)
Angular
Momentum
Quantum Number
(l)
What it
Describes
Allowed Values
Example
Significance
Magnetic
Quantum Number
(ml)
Spin Quantum
Number (ms)
When all electrons in an atom are in the lowest energy level possible they are said to be in ground state.
When energy is absorbed and electrons jump to higher energy levels they are said to be in an excited state.
Complete the following table.
n
1
l
0
ml
0
Name
1s
2
3
Complete the table, indicating
forbidden combinations with an X.
Orbital
1p
2s
2d
3d
3f
4d
n value
4
Which of the following is not an allowed set of quantum
numbers? Circle the problem(s).
l value
n
1
2
3
4
3
2
l
1
1
0
2
4
1
ml
0
-1
+1
-2
+4
2