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userdata-paziras-Chem101-Chap_07A

# Theelectron inthehatomdoesnotspiral

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Unformatted text preview: .63 x 10-34 J . s) ( 1.255 x 10 s–1 ) E = ? E = 8.32 x 10 28 J 2. Light with a wavelength of 465 nm lies in the blue region of the visible spectrum. Calculate the frequency o f this light. l = 465 nm c = l x u c = 3.00 x 10 8 m/s υ = u = ? m 14 ­1 s υ = = 6.45 x 10 s 1 m 465 nm x 9 10 nm c λ 3.00 x 1 8 0 1 3. What is the wavelength of microwave radiat ion whose frequency is 1.145 x 10 0 s–1? λ = c υ 1 u = 1.145 x 10 0 s–1 c = l x u c = 3.00 x 10 8 m/s m s = 2.62 x 10 2 m λ = 10 1 1.145 x 10 s 8 3.00 x 10 l = ? 4. The green line in the atomic spectrum o f thallium has a wavelength of 535 nm. Calculate the energy of a photon of this light. λ = 53 nm x 5 1 m = 5.35 x 10 7 m 9 10 n m E = h x u υ = 8 c = 3.00 x 10 m/s c λ c = l x u c E = h x λ h = 6.63 x 10-34 J . s (6.63 10 34 J s )(3.00x108 m / s ) 4x 5.35x10 7 m E = 3.72 x 10 19 J E = ? E = 10 Chemistry 101 Chapter 7 BOHR’S POSTULATES · Bohr tried to account for two pheno mena that were unaccounted for in his time: 1. The electron in the H atom does not spiral into the nucleus (the electron would continuously give off energy as it spirals into the nucleus) 2. The line spectrum of the H atom. Bohr’s Postulates: 1. ENERGY­LEVEL POSTULATE An electron can have only specific energy value...
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