Question

The most prominent line in the emission spectrum of chromium is found at $425.4 \mathrm{nm}$. Other lines in the chromium spectrum are found at $357.9 \mathrm{nm}, 359.3 \mathrm{nm}$ $360.5 \mathrm{nm}, 427.5 \mathrm{nm}, 429.0 \mathrm{nm},$ and $520.8 \mathrm{nm}$ (a) Which of these lines represents the most energetic light? (b) What color is light of wavelength $425.4 \mathrm{nm} ?$

Name: Problem 64, Chapter 7: Chemistry and Chemical Reactivity
Uploaded: 2020-07-10T05:54:45-08:00
Duration: 1 min 23 s
Channel: Abdel Osman
Description: The most prominent line in the emission spectrum of chromium is found at 425.4 nm. Other lines in the chromium spectrum are found at 357.9 nm, 359.3 nm 360.5 nm, 427.5 nm, 429.0 nm, and 520.8 nm (a) Which of these lines represents the most energetic light? (b) What color is light of wavelength 425.4 nm ?

   The most prominent line in the emission spectrum of chromium is found at $425.4 \mathrm{nm}$. Other lines in the chromium spectrum are found at $357.9 \mathrm{nm}, 359.3 \mathrm{nm}$ $360.5 \mathrm{nm}, 427.5 \mathrm{nm}, 429.0 \mathrm{nm},$ and $520.8 \mathrm{nm}$
(a) Which of these lines represents the most energetic light?
(b) What color is light of wavelength $425.4 \mathrm{nm} ?$

Chemistry and Chemical Reactivity

John C. Kotz, Paul… 6th Edition

Chapter 7, Problem 64

Instant Answer

Solved by Expert Abdel Osman

07/10/2020

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We know that the energy of light is inversely proportional to its wavelength. This means that the shorter the wavelength, the higher the energy. Show more…

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The most prominent line in the emission spectrum of chromium is found at $425.4 \mathrm{nm}$. Other lines in the chromium spectrum are found at $357.9 \mathrm{nm}, 359.3 \mathrm{nm}$ $360.5 \mathrm{nm}, 427.5 \mathrm{nm}, 429.0 \mathrm{nm},$ and $520.8 \mathrm{nm}$ (a) Which of these lines represents the most energetic light? (b) What color is light of wavelength $425.4 \mathrm{nm} ?$

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Key Concepts

Emission Spectrum

An emission spectrum is produced when excited atoms or molecules release energy as light at characteristic wavelengths during transitions between energy levels. This spectrum serves as a unique fingerprint for identifying elements.

Visible Light and Color Mapping

The visible portion of the electromagnetic spectrum is divided into colors based on wavelength. Mapping wavelengths to corresponding colors allows one to determine the perceived color of light, as different wavelength ranges (such as violet, blue, green, etc.) correspond to specific colors in the visible spectrum.

Photon Energy and Wavelength Relationship

Photon energy is inversely related to wavelength; this means that photons with shorter wavelengths carry higher energy. This principle is fundamental in understanding how to compare the energetic nature of various light emissions.

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