In Comparing the Dark Fraunhofer Lines with Light Emitted by Elements

question 130

Multiple Choice

In comparing the dark Fraunhofer lines with light emitted by elements in a flame, Bunsen and Kirchhoff demonstrated that ________

• A)atoms emit and absorb electromagnetic radiation at characteristic wavelengths.
• B)the solar spectrum has dark lines.
• C)helium may be found in minerals that contain uranium.
• D)electrons are responsible for the absorption and emission of electromagnetic radiation.
• E)the solar spectrum has bright lines.