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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 7, Problem 32E
Textbook Problem
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Which wavelength of light is most likely to cause a sunburn? Explain.

a. 700 nm

b. 400 nm

c. 200 nm

Interpretation Introduction

Interpretation:

The wavelength of light that is most likely to cause a sunburn is to be identified and the reason behind this is to be explained.

Concept Introduction:

The distance between two consecutive crests of a wave is called wavelength.

Sunburn is skin damage or skin burn because of overexposure to sunlight.

A small packet of energy associated with light (electromagnetic radiation) is called photon.

The relation between energy of a photon and wavelength is as follows:

Εphoton1λ

Here, Εphoton is the energy per photon and λ is the wavelength of light.

Explanation of Solution

Given information: The given wavelengths of light are 700nm, 400nm, and 200nm.

Reason for theCorrect options:

The relation between energy of a photon and wavelength of light is as follows:

Εphoton1λ

This means, Ephoton of light is inversely proportional to the wavelength of the light.

As 200nm is the shortest wavelength among the given wavelengths of light, it has the highest photon energy

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Chemistry In Focus
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