Chapter 28.1, Problem 11SSC

To determine

To Explain: The difference between emission spectra of incandescent solids and atomic gases.

Explanation of Solution

Introduction:

The type of emission spectrum such as line and band spectra can explain the phenomenon.

Incandescent solids give band/continuous spectrum, whereas gaseous atom gives line spectrum.

Line spectrum	Band spectrum
1. Sharp distinct lines. 2. Also called atomic spectrum. 3. Occur due to transition of electrons in atom.	1. Close lines with continuous band. 2. Also called molecular spectrum. 3. Occur due to vibrational and rotational energy changes.

Common features of both spectra are:-

1. Produced by emission of radiation.
2. Have bright lines on dark background.

Conclusion:

Incandescent solids give band/continuous spectrum, whereas gaseous atom gives line spectrum.