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_______ E4=0.85eV
_______ E3=1.5eV
_______ E2=3.4eV
_______ E1=13.6eV
Consider the electron energy level diagram for hydrogen as shown above.
An electron in the ground state of hydrogen atom has an energy of -13.6eV. and 0 eV is the highest energy level present in a hydrogen atom. Identify which of the following energies not possible by photon emitted from hydrogen?

A
1.9 eV
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B
13.6 eV
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C
0.65 eV
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D
11.1 eV
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E
10.2 eV
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Solution

The correct option is D 11.1 eV
A photon contains energy that is equal to the difference in energy levels of the levels between which transition took place.
The following are the transitions for the possible photon energies,
1.9eV for 32
13.6eV for 1
0.65eV for 43
10.2eV for 21

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