Electrons as Waves Part I.

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Presentation transcript:

Electrons as Waves Part I

Electrons What did we learn from Rutherford? Why was his model of the atom considered incorrect? Elements chlorine, argon and potassium Why are they different?

Chlorine Gaseous state at room temp Yellow-green in color

Argon Also a gas at room temp Unreactive unlike chlorine

potassium Solid at room temp Very reactive Stored in oil

Wave Nature of Light Electromagnetic radiation Types Def - form of energy that exhibits wave-like behavior as it travels through space Types

Dissection of a wave

Wave types High frequency – short wavelengths Low frequency – long wavelengths

Wave calculations c = the speed of light c = λν λ = wavelength (m) = 3.00 x 108 m/s c = λν λ = wavelength (m) ν = frequency (Hz or s-1)

Wave calculations Calculate the wavelength of a microwave if its frequency is 3.88 x109 Hz?

Wave calculations What is the frequency of a green light, which has a wavelength of 4.90x10-7 m?

Wave calculations An X-ray has a wavelength of 1.15x10-10 m. What is its frequency?

Wave calculations An ultraviolet light wave is used to kill bacteria. It has a frequency of 1.2 x1015 /s. Find the wavelength.