Supplemental Instruction
Iowa State University / Leader: / Grant DeRocher
Course: / Chem 167
Instructor: / Houk
Date: / 02/17/13
1. Calculate the wavelengths, in meters, of radiation of the following frequencies: (a) 5.00 x 1015 s-1 (b) 2.11 x 1014 s-1
c= 2.99792458x108 m s-1 λ= wavelength ν(this is greek letter nu)=frequency
2. Find the energy of a photon with each of the following frequencies: (a) 15.3THz (b) 1.7 EHz
3. For photons with the following energies, calculate the wavelength and identify the region of the spectrum they are from: (a) 3.5 x 10-20 J, (b) 8.7 x 10-26 J
4. Various optical disk drives rely on lasers operating at different wavelengths, with shorter wavelengths allowing a higher density of data storage. For each of the following drive types, find the energy of a single photon at the specified wavelength. (a) DVD λ=650nm (b) Blu-Ray disc λ=405nm
5. Assume that a microwave oven operates at a frequency of 1.00 x 1011 s-1. (a) What is the wavelength of this radiation in meters? (b) What is the energy in Joules per photon? (c) What is the energy per mole of photons?
6. When light with a wavelength of 58.5 nm strikes the surface of tin metal, electrons are ejected with a maximum kinetic energy of 2.69 x 10-18 J. What is the binding energy of these electrons to the metal?
7. A mercury atom emits light at many wavelengths, two of which are at 435.8 and 546.1 nm. Both of these transitions are to the same final state. (a) what is the energy difference between the two states for each transition? (b) if a transition between the two higher energy states could be observed, what would be the frequency of the light?
DO ON YOUR OWN, I WILL POST SOLUTIONS
Know table 6.3 and diagonal chart
9. A particular orbital n=4 and l=2. What must this orbital be? (a) 3p (b) 4p (c) 5d (d) 4d
10. What is the maximum number of electrons in an atom that can have the following quantum numbers? (a) n=2 (b) n=3 and l=1 (c) n=3, l=1, ml=0
Know definitions of wavelength, amplitude and frequency.
c= 2.99792458x108 m s-1
λ= wavelength
ν(this is greek letter nu)=frequency
pg 164 know electromagnetic light spectrum, might want on table
pg 162 know c = λ * ν and math connections, put on table
ph 166 look at pictures and know what they mean
pg 167 know E=hv where h=6.626*10-34 J s
also E= hc/v
pg 168 look at example problem to understand process and put Ephoton= Binding E +Kinetic E on table
do problems 6.8,6.9, 6.12, 6.13,6.14 on your own. They are all quick problems but important for understanding. Also do problems 6.25-6.29 for understanding and 6.34-6.37 as well for understanding. I don’t have time to cover all of these but they will help you understand the calculations better
Schroedinger equation