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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
any SI prefix in the ALEKS Data tab.)
-21
. You can find the meaning of
1400-
energy (z))
1200-
1000-
500-
600-
400-
B
I
A
200-
0
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 A to C, will a photon be absorbed or
emitted?
zJ
zJ
O absorbed
emitted