Concept explainers
(a)
Interpretation:
The energy of the photon emitted by the mercury atom needs to be determined.
Concept introduction:
The energy of a photon can be determined by calculating the difference of the energy value between the original energy and the energy of the photon after dropping. Energy is expressed in units of Joules.

Answer to Problem 125A
The energy of the photon emitted by the mercury atom
Explanation of Solution
Given that mercury drops from
Therefore, the energy of the photon emitted by the mercury atom
(b)
Interpretation:
The frequency of the photon emitted by the mercury atom needs to be determined.
Concept introduction:
The frequency of a photon can be calculated as,
Where,
(b)

Answer to Problem 125A
The frequency of the photon emitted by the mercury atom is
Explanation of Solution
Given that mercury drops from
The energy of the photon emitted by the mercury atom
The frequency of the photon emitted by the mercury atom can be calculated by using the formula,
Here,
(c)
Interpretation:
The wavelength of the photon emitted by the mercury atom needs to be determined.
Concept introduction:
The wavelength of a photon can be calculated using the formula,
Where,
(c)

Answer to Problem 125A
The wavelength of the photon emitted by the mercury atom
Explanation of Solution
The wavelength of the photon emitted by the mercury atom can be calculated by using the formula,
Here,
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