Concept explainers
Interpretation:
The wavelength, initial quantum number and the final quantum number in the visible spectrum of hydrogen have to be labeled.
Concept Introduction:
The wave nature of any light can be described by its frequency, wavelength, and amplitude. The wavelength
The relation between frequency
Here,
The relation between the energy
Here,
The energy of Bohr orbits of hydrogen is dependent on the principal quantum number
Answer to Problem 7.40QE
The labeled visible spectrum of hydrogen is as follows:
Explanation of Solution
The visible spectrum of hydrogen gives four lines that represent four transitions of the hydrogen as follows:
(1) Transition 1 is from
(2) Transition 1 is from
(3) Transition 1 is from
(4) Transition 1 is from
The expression to calculate the energy difference between initial Bohr orbit
Substitute
Hence, the expression to calculate energy difference between initial Bohr orbit
Here,
For transition (1):
Substitute 3 for
Substitute
Rearrange equation (6) to calculate the value of
Substitute
For transition (2):
Substitute 4 for
Substitute
For transition (3):
Substitute 5 for
Substitute
For transition (4):
Substitute 6 for
Substitute
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Chapter 7 Solutions
Chemistry: Principles and Practice
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