Em Radiation And Electron Configuration Study Guide
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1
2There will be a Quiz on _________________
_ on Electromagnetic Radiation and Electron Configurations.
Study WS 13.0, 13.1, 13.15, 13.4, and the Notes on the MQMM
Know the formulas for wavelength, frequency, and energy, and how to use them.
8
Know the value for c, including the units. ( c = 3.00 x 10
m/s)
Be able to convert between meters and nanometers. (the conversion will not be given).
3
6
Be able to convert between Hertz, MegaHertz, and kiloHertz. (kilo = 10
and Mega = 10
will be given if needed)
Wavelength, frequency, and energy – which are related directly? Inversely? What does this mean?
Know the order of the electromagnetic spectrum (For example, can you list them, in order, from highest to lowest energy, or
from highest to lowest frequency, or from shortest to longest wavelength, etc)
-34
.
(h = 6.63 x 10
J
s will be given)
Be able to write the electron configuration of any element. A chart like this will be given:
1s
Notice, you will need to write the arrows on the chart, and will need to know how
many total electrons can fit into the s, p, d, and f sublevels.
2s
2p
Light Practice Problems (report wavelengths in both m and nm)
3s
3p
3d
1. Find the photon energy of EM radiation with a wavelength of 45 nm.
4s
4p
4d
4f
15
2. Find the wavelength of EM radiation with a frequency of 2.37 x 10
Hz.
5s
5p
5d
5f
-20
3. Find the wavelength of EM radiation with a photon energy of 2.2 x 10
J
6s
6p
6d
6f
4. Find the frequency of EM radiation with a wavelength of 1242 nm.
7s
7p
7d
7f
-5
5. Find the photon energy of EM radiation with a wavelength of 6.8 x 10
m.
8s
8p
8d
8f
6. Find the energy of EM radiation with a frequency of 94.2 MegaHertz.
-13
7. Find the frequency of EM radiation with a photon energy of 9.7 x 10
J.
8. Find the energy of EM radiation with a wavelength of 1111 nm.
9. For each pair, determine which has more energy.
a.
blue light
or
infrared
b.
EM radiation with a wavelength of 166 nm
or
EM radiation with a wavelength of 55 nm
c.
microwaves
or
Infrared
d.
green
or
orange
15
14
e.
Radiation with a frequency of 1.5 x 10
Hz
or Radiation with a frequency of 6.7 x 10
Hz.
10. Which of these has a longer wavelength?
a. X-rays or ultraviolet
-18
-18
b. Light with a photon energy of 6 x 10
J, or one with an energy of 5 x 10
J.
c. Light with a frequency of 10 MHz (MegaHertz) or light with a frequency of 500 kHz (kiloHertz).
d. yellow light
or
green light
11. Write the electron configurations for the following elements. Do NOT use the noble gas abbreviation.
P
Se
Mn
F
H
12. Write the electron configurations for the following elements. OK to use the noble gas abbreviation.
P
Zr
Cs
Db
Ir
In
Er
Kr
Ca
Pb
-18
-7
-6
3
Answers: 1. 4.4 x 10
J
2. 1.27 x 10
m or 127 nm.
3. 9.0 x 10
m or 9.0 x 10
nm
14
-21
-26
21
-19
4. 2.42 x 10
Hz
5. 2.9 x 10
J
6. 6.25 x 10
J
7. 1.5 x 10
Hz 8. 1.79 x 10
J
15
-18
9. blue, 55 nm, IR, green, 1.5 x 10
Hz.
10. uv, 5 x 10
J, 500 kHz, yellow
2
2
6
2
3
11. P 1s
2s
2p
3s
3p
2
2
6
2
6
2
10
4
Se
1s
2s
2p
3s
3p
4s
3d
4p
2
2
6
2
6
2
5
Mn
1s
2s
2p
3s
3p
4s
3d
2
2
5
F
1s
2s
2p
1
H
1s
(Answers to 12 on next page)
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