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This
energy diagram shows the allowed energy levels of an electron in a certain atom. (Note: the SI prefix 'zepto' means 10
You can find the meaning of
any S1 prefix in the ALEKS Data tab.)
1200
energy (z))
100-
Use this diagram to complete the table below.
What is the energy of the electron in the ground state?
What is the energy of the electron in the first excited
state?
If the electron makes the transition shown by the red
arrow, from B to C, will a photon be absorbed or
emitted?
Calculate the wavelength of the photon that would be
absorbed or emitted. Round your answer to 3
significant digits.
absorbed
O emitted

Q-P
x