# The frequency of the strong red line in the spectrum of potassium is 3.91 × 10 14 /s. What is the wavelength of this light in nanometers?

### General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
Publisher: Cengage Learning
ISBN: 9781305580343

Chapter
Section

### General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
Publisher: Cengage Learning
ISBN: 9781305580343
Chapter 7.1, Problem 7.1E
Textbook Problem
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## The frequency of the strong red line in the spectrum of potassium is 3.91 × 1014/s. What is the wavelength of this light in nanometers?

Interpretation Introduction

Interpretation:

The wavelength of red light from the given frequency has to be calculated.

Concept introduction:

Relation between frequency and wavelength is,

C=λν

C is the speed of light.

ν is the frequency.

λ is wavelength.

The distance between any two similar points of a wave is called wavelength

Figure 1

Frequency is defined as number of wavelengths of a wave that can pass through a point in one second.

To calculate: The wavelength of red light from the given frequency.

### Explanation of Solution

Given,

Frequency of red light ν is 3.91×1014/s

C=λνλ=Cν=3

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