Consider a pretend atom for which the electrons can be in any one of the followi
ID: 1474176 • Letter: C
Question
Consider a pretend atom for which the electrons can be in any one of the following energy states:
A -1.400×10-18J
B -8.000×10-19J
C -5.000×10-19J
D -3.000×10-19J
Start by arranging the four levels on a graph, then answer the following questions. An electron jumps from one energy state to another, as described in each of the statements below. Describe whether a photon is absorbed or emitted in the process.
From level D to level B (absorbed or emitted)
From level B to level D (absorbed or emitted)
From level A to level C (absorbed or emitted)
From level C to level A (absorbed or emitted)
What is the energy of the photon absorbed in the transition from level A to level C?
Label each of the following photons as ones that can or cannot be absorbed by this atom. The value stated is the energy of the photon.
1.40×10-18J (can or cannot be absorbed)
3.00×10-19J (can or cannot be absorbed)
1.00×10-19J (can or cannot be absorbed)
6.00×10-19J (can or cannot be absorbed)
7.00×10-19J (can or cannot be absorbed)
Explanation / Answer
Energy Levels -
A = -1.400×10-18 J = - 8.75 eV
B = -8.000×10-19 J = - 5.0 eV
C = -5.000×10-19 J = - 3.125 eV
D = -3.000×10-19 J = - 1.875 eV
A photon is absorbed if the electron is going upward in energy, and emitted if the electron is going down in energy
From level D to level B = Photon is Absorbed.
From level B to level D = Photon is Emitted.
From level A to level C = Photon is Absorbed.
From level C to level A = Photon is Emitted.
What is the energy of the photon absorbed in the transition from level A to level C?
Energy Level of the photon absorbed = -3.125 - (-8.75) eV
Energy Level of the photon absorbed = 5.625 eV
Energy Level of the photon absorbed = 9*10^-19 J
1.40×10-18J ( cannot be absorbed)
3.00×10-19J (can be absorbed)
1.00×10-19J (can be absorbed)
6.00×10-19J (cannot be absorbed)
7.00×10-19J (cannot be absorbed)
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