Ap Chemistry Michalek - Unit 7: Atomic Structure And Periodicity Worksheet Page 8

AP Chemistry--Michalek

Unit 7 Atomic Structure and Periodicity

7.3 The Atomic Spectrum of Hydrogen

Read and outline 7.3

Define:

Continuous Spectrum

Line Spectrum

What is significant of the line spectrum of hydrogen?

7.3 Notes

Diffraction results when light is scattered from a regular array of points or lines. A continuous spectrum is made from

white light shined through a prism, and a diffraction grating is made from exciting electrons. Emission spectrum emitted

from electron is called a line spectrum.

What is the significance of the line spectrum of hydrogen? It indicates that only certain energies are allowed for the

electron in the hydrogen atom. In another words, the energy of the electron in the hydrogen atom is quantized. The

discrete line spectrum of hydrogen shows that only certain energies are possible; that is, the electron energy levels are

quantized, in contrast, if any energy level were allowed, the emission spectrum would be continuous.

Planck’s Equation:

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