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What are the restrictions on the j quantum number in a radiative transition?
Δj = 1, 0, 1

What is the binding energy for hydrogen to the nearest 0.1 eV?
13.6 eV

Emission of radiation by a change of bound electron energy levels is generally more probable if the wave functions are
 One even and one odd
 Somewhat similar

True or False: A state which is a combination of states with different energies can be a stationary state.
False

What can we say about fermions?
 An electron is an example
 A proton is an example
 No more than one particle can be in exactly the same state
 They have halfintegral spin

What are the possible values of m for a particle with angular momentum quantum number l?
m = l, … , l

What are the restrictions on the m quantum number in a radiative transition?
Δm = 1, 0, 1

How does the Zeeman shift of an energy level depend on the magnetic field?
It is proportional.

Which of the following has the greatest electron affinity?
Iron (middle column of the periodic table in the fourth row)
Fluorine (second to last column of the periodic table)
Carbon (second row of the periodic table, near the middle)
Sodium (left column of the periodic table)
Fluorine (second to last column of the periodic table)

Compare the energy shifts of a level in a magnetic field for equal values of m and m_{s}.
The shift due to m_{s} is twice as big as the shift due to m.

What can we say about bosons?
 A photon is an example
 Wave function is symmetric under an exchange of particles

What are the restrictions on the l quantum number in a radiative transition?
Δ l = ± 1

What are the restrictions on the n quantum number in a radiative transition?
No restrictions

What are the restrictions on the S quantum number in a radiative transition?
Δ S = 0

What is the degeneracy of the n=3 level in hydrogen?
18

