Quantum Number Worksheet #1 - Georgetown ISD
Name:_____________________________
Let’s Review Electrons in Atoms
E=h ν c= ν λ
E= energy in J c= speed of light 3.00X108 m/s
h = Planck’s constant 6.63X10-34 J · s λ= wavelength in m (λ is the Greek letter lambda)
v = frequency in Hz or s-1 (ν is the Greek letter nu)
A. Solve the following problems using the correct number of significant figures:
1. What is the wavelength, in nm, of a wave having a frequency of 3.44X109 MHz? (1MHz = 1X106Hz)
2. What is the energy of one photon of violet light?
3. A radio station broadcasts with a ( of 94.7 MHz. What is the ( of the broadcast?
|Visible Portion of Electromagnetic Spectrum |
|Representative |Wavelength |Color |
|Wavelength (nm) |Region (nm) | |
|410 |400-425 |Violet |
|470 |425-480 |Blue |
|490 |480-500 |Blue-Green |
|520 |500-560 |Green |
|565 |560-580 |Yellow-Green |
|580 |580-585 |Yellow |
|600 |585-650 |Orange |
|650 |650-700 |Red |
B. Determine which has the following:
1. Higher λ: orange or green light
2. Lower ν: blue or red light
3. Greater E: IR or UV
4. Greater E: Gamma or X-Rays
5. Shorter λ: FM or AM Radio
6. Higher ν: microwave or UV
7. Lower E: yellow or violet light
8. Lower ν: IR or red light
9. Longer λ: TV Waves or blue light
|Electromagnetic Spectrum | |
|Wavelength |Type of Electromagnetic Radiation |
|5.55 m to 187 m OR (5.55X109 nm to 1.87X1011 nm) |AM Radio |
|0.187 m to 5.55 m OR (1.87X108 nm to 5.55X109 nm) |TV & FM Radio Waves |
|10 mm to 187 mm OR (1X107 nm to 1.87X108 nm) |Microwave |
|750 nm to 1,000,000 nm |Infrared (IR) |
|400 nm to 700 nm |Visible spectrum |
|10 nm to 400 nm |Ultraviolet (UV) |
|Less than 10 nm |X rays |
|Less than 0.001 nm |Gamma (γ) rays |
C. Write the electron configurations for the following elements using orbital notation:
1. Sulfur
2. Silver
3. Tungsten
D. Write the complete electron configuration for the following elements:
1. Krypton
2. Californium
3. Tin
E. Write the noble gas or abbreviated electron configuration for the following elements:
1. Chlorine
2. Nickel
3. Ruthenium
4. Iridium
5. Berkelium
G. Give the four q. n. that describe the location of the last electron of the following:
1. Magnesium_____________________________________________________________________________
2. Arsenic_______________________________________________________________________________
3. Zirconium_____________________________________________________________________________
4. Iodine________________________________________________________________________________
5. Cesium_______________________________________________________________________________
6. Gold__________________________________________________________________________________
7. Cerium_______________________________________________________________________________
8. Uranium______________________________________________________________________________
9. Bohrium______________________________________________________________________________
H. Give the four quantum numbers that describe the location of the following:
1. 3rd electron in C _________________________________________
2. 29th electron in Zn _______________________________________
3. 19th electron in Cr _______________________________________
I. Identify the element whose last electron would have the following four q. n.:
1. 3, 2, -1, -1/2 ___________________________________________________________________________
2. 3, 1, -1, -1/2 ___________________________________________________________________________
3. 3, 2, -2, +1/2 __________________________________________________________________________
4. 4, 2, -1, +1/2 __________________________________________________________________________
5. 5, 2, +1, +1/2 __________________________________________________________________________
6. 6, 1, 0, +1/2 ___________________________________________________________________________
7. 4, 3, 0, -1/2 ___________________________________________________________________________
8. 2, 1, +1, +1/2 __________________________________________________________________________
J. Write the complete electron configuration for the following ions and state if it is an anion or cation:
1. Mg 2+ _________________________________ 2. Ca 2+_________________________________
3. H 1+ _________________________________ 4. H 1-_________________________________
5. S 2- _________________________________ 6. O 2-_________________________________
7. Na 1+ _________________________________ 8. F 1-_________________________________
9. Cl 1- _________________________________ 10. K 1+_________________________________
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