Quantum Number Definitions
What is the Principle Quantum Number definition and its possible values?
A. Energy level/shell number n=1,2,3...
B. Shape n= -1, 0, 1
C. Spin n= 1,2,3...
D. Orientation n= -1, 0, 1
A. Energy level/shell number n=1,2,3...
If n= 2
What are the possible ℓ values?
If ℓ = 1
What are the possible mℓ values?
ℓ= 0 or 1
mℓ= -1, 0, +1
1 m = ___ mm
1000
Equation to represent the relationship of wavelength and frequency?
c=λv
A TV transmitter broadcasts at a frequency of 6.75×107 Hz. What is the wavelength of these waves in meters?
c= 2.99x108
4.44 m
What is the angular momentum quantum number definition and possible values?
A. Shape ℓ= 0, 1, 2...
B. Orientation ℓ= 0 to -1
C. Shape ℓ= 0 to n-1
D. Spin ℓ=+ or - 1/2
C. Shape ℓ= 0 to n-1
If n=3
what values could ℓ equal?
If ℓ= 2, what possible values could mℓ equal?
ℓ= 0, 1, 2
mℓ= -2, -1, 0, +1, +2
as frequency increases, energy _____
increases
what does c represent?
what does h represent?
c = speed of light
h= planks constant
A green laser light has wavelength about 5.50×10−7m. What would its frequency be?
c=2.99x108
5.45 × 10¹⁴ Hz
What is the magnetic quantum number definition and possible values?
A. Size mℓ= -1 to +1
B. Spin mℓ= 1, 2, 3...
C. Orientation mℓ= -ℓ to +ℓ
D. Energy mℓ= -1, -2, -3...
C. Orientation mℓ= -ℓ to +ℓ
Give the electron configuration for N and draw the orbital diagram
ll ll l l l
1s 2s 2p
as wavelength increases, frequency _____
decreases
What is the word for numbers of peaks per unit in time?
What is the symbol to go with it?
frequency
v
An FM radio station found at 103.1 on the FM dial broadcasts at a frequency of 1.031x108 1/s (103.1 MHz). What is the wavelength of these radio waves in meters? c=2.99x108 m/s
2.908 m
What is the spin quantum number definition and possible values?
A. Energy ms= 1, 2, 3...
B. Spin ms= + or - 1/2
C. Shape ms= -1 to +1
D. Twirl ms= 0 to n-1
B. Spin ms= + or - 1/2
What element does 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p² represent?
Germanium (Ge)
When is my last Friday session due to thanksgiving and dead day?
Will there be any extra sessions? If so, when?
Friday November 21
Thursday December 4th at 5:30-6:30 Sherrod library room 128/129
what is plank's equation
E = hν
E for energy
h is constant
v means frequency
Light with a wavelength of 6.145 × 10⁻⁷ m looks orange. What is the energy, in joules, per photon of this orange light? What is the energy in J?
c= 2.99x108 m/s = λv
h= 6.626x10-34 J.s = E/v
3.233x10-19 J
What is the Pauli Exclusion Principle?
A. If you exclude one of the 4 quantum numbers, you can still know the location and speed
B. You can sometimes exclude the rule that electrons do not exist between energy levels
C. Opposite spin removes the problem of only having one electron per orbital
D. No two electrons can have the same set of all four quantum numbers in the same atom
D. No two electrons can have the same set of all four quantum numbers in the same atom
How do you write the abbreviated electron configuration for Mg (noble gas)?
Mg [Ne] 3s2
what is the formula for density?
d=m/v
what is the unit of measurement for frequency?
per second (s-1 or /s)
Hertz (Hz)
FM–95, an FM radio station, broadcasts at a frequency of 9.51 107 s–1 (95.1 MHz). What is the wavelength of these radio waves in meters?
c= 2.99x108
3.15 m