Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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If one of the waves in the margin represents blue light and the other red light, which one is which?
![## Electromagnetic Spectrum and Wavelength Units
### Figure 6.4 Explanation
**Figure 6.4: The electromagnetic spectrum.**
This figure illustrates the range of wavelengths in the electromagnetic spectrum, from very short gamma rays to very long radio waves. The visible region of the spectrum ranges approximately from 400 nm to 750 nm, spanning from violet to red light.
### Table 6.1: Common Wavelength Units for Electromagnetic Radiation
| Unit | Symbol | Length (m) | Type of Radiation |
|--------------|--------|--------------------|----------------------------|
| Ångstrom | Å | 10^-10 | X-ray |
| Nanometer | nm | 10^-9 | Ultraviolet, visible |
| Micrometer | μm | 10^-6 | Infrared |
| Millimeter | mm | 10^-3 | Microwave |
| Centimeter | cm | 10^-2 | Microwave |
| Meter | m | 1 | Television, radio |
| Kilometer | km | 1000 | Radio |
### Sample Exercise 6.1: Concepts of Wavelength and Frequency
**Problem:**
Two electromagnetic waves are represented in the margin.
(a) Which wave has the higher frequency?
(b) If one wave represents visible light and the other represents infrared radiation, which wave is which?
**Solution:**
(a) Wave 1 has a longer wavelength (greater distance between peaks). The longer the wavelength, the lower the frequency (\[v = c / λ\]). Thus, Wave 1 has the lower frequency, and Wave 2 has the higher frequency.
(b) The electromagnetic spectrum (Figure 6.4) indicates that infrared radiation has a longer wavelength than visible light. Thus, Wave 1 would be the infrared radiation.
#### Practice Exercises
**Practice Exercise 1:**
A source of electromagnetic radiation produces infrared light. Which of the following could be the wavelength of the light?
(a) 3.0 nm
(b) 4.7 cm
(c) 66.8 m
(d) 345.9 cm
(e) 16.5 Å
**Practice Exercise 2:**
\[ ... \]
*End of Exercise Section*
The figure accompanying the sample exercise illustrates two waves: Wave](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffcbd669c-f16c-4186-8647-cce1c8793c67%2F08a753f9-6214-4fe4-aeb9-66368b22f1e1%2Ftg2mor_processed.png&w=3840&q=75)
Transcribed Image Text:## Electromagnetic Spectrum and Wavelength Units
### Figure 6.4 Explanation
**Figure 6.4: The electromagnetic spectrum.**
This figure illustrates the range of wavelengths in the electromagnetic spectrum, from very short gamma rays to very long radio waves. The visible region of the spectrum ranges approximately from 400 nm to 750 nm, spanning from violet to red light.
### Table 6.1: Common Wavelength Units for Electromagnetic Radiation
| Unit | Symbol | Length (m) | Type of Radiation |
|--------------|--------|--------------------|----------------------------|
| Ångstrom | Å | 10^-10 | X-ray |
| Nanometer | nm | 10^-9 | Ultraviolet, visible |
| Micrometer | μm | 10^-6 | Infrared |
| Millimeter | mm | 10^-3 | Microwave |
| Centimeter | cm | 10^-2 | Microwave |
| Meter | m | 1 | Television, radio |
| Kilometer | km | 1000 | Radio |
### Sample Exercise 6.1: Concepts of Wavelength and Frequency
**Problem:**
Two electromagnetic waves are represented in the margin.
(a) Which wave has the higher frequency?
(b) If one wave represents visible light and the other represents infrared radiation, which wave is which?
**Solution:**
(a) Wave 1 has a longer wavelength (greater distance between peaks). The longer the wavelength, the lower the frequency (\[v = c / λ\]). Thus, Wave 1 has the lower frequency, and Wave 2 has the higher frequency.
(b) The electromagnetic spectrum (Figure 6.4) indicates that infrared radiation has a longer wavelength than visible light. Thus, Wave 1 would be the infrared radiation.
#### Practice Exercises
**Practice Exercise 1:**
A source of electromagnetic radiation produces infrared light. Which of the following could be the wavelength of the light?
(a) 3.0 nm
(b) 4.7 cm
(c) 66.8 m
(d) 345.9 cm
(e) 16.5 Å
**Practice Exercise 2:**
\[ ... \]
*End of Exercise Section*
The figure accompanying the sample exercise illustrates two waves: Wave
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