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Chapter 7: Problem 4

Give the high and low wavelength values that define the visible region of the electromagnetic spectrum.

Short Answer

Expert verified
The visible light spectrum is defined by wavelengths between 400 and 700 nanometers.

Step by step solution

01

Understand the Electromagnetic Spectrum

The electromagnetic spectrum encompasses all types of electromagnetic radiation, sorted by their frequency and wavelength. There's a small portion of the spectrum that human eyes can perceive: the visible light spectrum.
02

Define the Visible Light Spectrum

Visible light is typically defined as having wavelengths in the range of 400–700 nanometers (nm), between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths). This wavelength means a frequency range of roughly 430–790 THz (Terahertz).

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Most popular questions from this chapter

Explain what is meant by a noble gas core. Write the electron configuration of a xenon core.

A photoelectric experiment was performed by separately shining a laser at \(450 \mathrm{nm}\) (blue light) and a laser at \(560 \mathrm{nm}\) (yellow light) on a clean metal surface and measuring the number and kinetic energy of the ejected electrons. Which light would generate more electrons? Which light would eject electrons with greater kinetic energy? Assume that the same amount of energy is delivered to the metal surface by each laser and that the frequencies of the laser lights exceed the threshold frequency.

Only a fraction of the electrical energy supplied to a tungsten lightbulb is converted to visible light. The rest of the energy shows up as infrared radiation (that is, heat). A 75-W lightbulb converts 15.0 percent of the energy supplied to it into visible light (assume the wavelength to be \(550 \mathrm{nm}\) ). How many photons are emitted by the lightbulb per second? \((1 \mathrm{~W}=1 \mathrm{~J} / \mathrm{s} .)\)

Which of the four quantum numbers \(\left(n, \ell, m_{\ell}, m_{s}\right)\) determine (a) the energy of an electron in a hydrogen atom and in a many- electron atom, (b) the size of an orbital, (c) the shape of an orbital, (d) the orientation of an orbital in space?

Describe the shapes of \(s, p,\) and \(d\) orbitals. How are these orbitals related to the quantum numbers \(n, \ell\) and \(m_{\ell} ?\)
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