(a)
Interpretation:
The absorption and emission transitions in the image are to be determined.
Concept introduction:
Atomic spectrum is a series of
Absorption spectra - When an atom is subjected to energy in the form of heat or light, the electrons absorb the energy. If an electron in a lower energy level absorbs a photon whose energy is equal to the difference in the energies of the lower energy level and a higher energy level, the electron jumps to the higher energy level. The absorption spectra are characterized by the presence of a series of dark lines separated by colored bands.
(b)
Interpretation:
The increasing order of energy of emissions is to be determined.
Concept introduction:
Atomic spectrum is a series of electromagnetic radiations absorbed or emitted when electrons in an atom undergo transitions between different energy levels.
Emission spectra – In the emission spectra, an electron in the higher energy level jumps to a lower energy level by releasing energy. The emission spectra are characterized by the presence of a series of fine lines at specific wavelengths separated by black spaces.
The equation to find the difference in the energy between the two levels in hydrogen-like atoms is,
Here,
(c)
Interpretation:
The increasing order of the wavelengths for absorption transitions is to be determined.
Concept introduction:
Atomic spectrum is a series of electromagnetic radiations absorbed or emitted when electrons in an atom undergo transitions between different energy levels.
Absorption spectra - When an atom is subjected to energy in the form of heat or light, the electrons absorb the energy. If an electron in a lower energy level absorbs a photon whose energy is equal to the difference in the energies of the lower energy level and a higher energy level, the electron jumps to the higher energy level. The absorption spectra are characterized by the presence of a series of dark lines separated by colored bands.
The equation used to predict the position and wavelength of any line in a given series is called the Rydberg’s equation.
Rydberg’s equation is as follows:
Here,
The conversion factor to convert wavelength from

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Chapter 7 Solutions
MOLECULAR NATURE OF MATTER ALEKS ACCESS
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