CHEM 1000 Chapter Notes - Chapter 8: Bohr Model, Johann Jakob Balmer, Heinrich Hertz

• School: York University
• Department: Chemistry
• Course: CHEM 1000
• Professor: William Pietro

Document Summary

Electromagnetic radiation is a form of energy transmission in which electric and magnetic fields are propagated as waves thru empty space. A wave is a disturbance that transmits energy thru space or a material medium. Amplitude the maximum height of the wave above the center line or maximum depth below. Frequency the number of crests or troughs that pass thru a given point per unit of time. 1 nm = 1x10-9 m = 1x10-7 cm = 10 . 1 = 1 x10-10 m = 1x10-8 cm = 100 pm. 1 pm = 1 x 10-12 m = 1 x 10-10 cm = 10-2 (the is not an si unit) The only thing that was able to explain the atomic spectra in the 19th century was quantum theory. The visible spectrum is said to be a continuous spectrum b/c light has many wavelength components. Each element has its own distinct line spectrum.