Domanda del libro di testo
The series of emission lines of the hydrogen atom for which nf = 3 is called the Paschen series. (b) Calculate the wavelengths of the first three lines in the Paschen series—those for which ni = 4, 5, and 6.
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Ch.6 - Electronic Structure of Atoms
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Non è quello che usi tu?Cambia libro di testo
Capitolo 6, Problema 90c
The human retina has three types of receptor cones, each sensitive to a different range of wavelengths of visible light, as shown in this figure (the colors are merely to differentiate the three curves from one another; they do not indicate the actual colors represented by each curve):
(c) Explain why the sky appears blue even though all wavelengths of solar light are scattered by the atmosphere.
Guida verificata passo dopo passo1
Identify the three types of cones in the human retina: S-cones (blue), M-cones (green), and L-cones (red).
Observe that S-cones are most sensitive to wavelengths around 450 nm, M-cones to around 530 nm, and L-cones to around 560 nm.
Understand that Rayleigh scattering is more effective at shorter wavelengths, which means blue light (shorter wavelength) is scattered more than red light (longer wavelength).
Note that even though all wavelengths of solar light are scattered, the higher sensitivity of S-cones to blue light makes the sky appear predominantly blue to the human eye.
Conclude that the combination of the scattering effect and the sensitivity of the S-cones results in the perception of a blue sky.
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Visible Light Spectrum
The visible light spectrum is the portion of the electromagnetic spectrum that is visible to the human eye, typically ranging from about 380 nm (violet) to 750 nm (red). Different wavelengths correspond to different colors, with shorter wavelengths appearing blue and longer wavelengths appearing red. Understanding this spectrum is crucial for explaining how light interacts with objects and how it is perceived by the human eye.
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01:24
Visible Light Spectrum
Rayleigh Scattering
Rayleigh scattering is the scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the light. This phenomenon is responsible for the blue color of the sky, as shorter wavelengths (blue light) are scattered more than longer wavelengths (red light) when sunlight passes through the Earth's atmosphere. This selective scattering leads to a predominance of blue light reaching our eyes from all directions in the sky.
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00:53Lattice Energy
Cone Photoreceptors
Cone photoreceptors are specialized cells in the retina that are responsible for color vision. There are three types of cones, each sensitive to different ranges of wavelengths corresponding to blue, green, and red light. The relative activation of these cones allows the brain to perceive a wide range of colors, including the blue of the sky, which is primarily detected by the cones sensitive to shorter wavelengths.
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01:04Radial and Angular Nodes
Pratica correlata
Domanda del libro di testo
Consider a transition in which the electron of a hydrogen atom is excited from n = 1 to n = ∞. (a) What is the end result of this transition?
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Domanda del libro di testo
The series of emission lines of the hydrogen atom for which nf = 3 is called the Paschen series. (a) Determine the region of the electromagnetic spectrum in which the lines of the Paschen series are observed.
759
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Domanda del libro di testo
Consider a transition in which the electron of a hydrogen atom is excited from n = 1 to n = ∞. (b) What is the wavelength of light that must be absorbed to accomplish this process?
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Domanda del libro di testo
Determine whether each of the following sets of quantum numbers for the hydrogen atom is valid. If a set is not valid, then indicate which of the quantum numbers has a value that is not valid: e. n = 2, l = 2, ml = 1, ms = +1/2
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Domanda del libro di testo
Consider a transition in which the electron of a hydrogen atom is excited from n = 1 to n = ∞. (d) How are the results of parts (b) and (c) related to the plot shown in Exercise 6.88?
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