Test 3 Flashcards
electromagnetic radiation
uv, visible light, IR, microwaves, television and radio signals, and X-rays
wavelength (λ)
(lambda) length between 2 successive crests
frequency (u)
number of cycles per second that pass a certain point (Hz cycles per second)
amplitude
maximum height of a wave
nodes
points of zero amplitude
crest
highest point of a wave
trough
lowest point of a wave
speed of light formula
c =λu
what is the speed of light?
c = 3 x 10^8
All electromagnetic radiation travels at…
THE SAME SPEED
higher energy rays on the electromagnetic spectrum are the color…
purple
the highest energy and highest frequency rays are…?
gamma rays
List the electromagnetic spectrum in order from lowest energy to highest energy
radio, microwave, infrared ray , visible light, ultraviolet, x-ray, gamma ray
plank’s constant (h)
6.626 x 10^-34 j/s
What is…
wavelength measured in
frequency measured in
speed of light measured in
plank’s constant measured in
energy measured in
(m)
(Hz)
(m/s)
(h)
(J)
formula for energy
e = hu
De Broglie equation
λ = h/mv
The De Broglie equation states that…
all matter has wave properties!!
The De Broglie Cont. tells us that…
the more massive the object, the smaller its associated wavelength
Principle Quantum number (n)
represents size (ex: 1s, 3p, 5d)
Angular Momentum Quantum number (l)
represents shape, can be 0,1,2, or 3
s=0
p=1
d-2
f=3
Magnetic Quantum number (m)
determines the number of orbitals in a subshell
(can have values of -l to 0) (ex: since p=1, there are 3 orbitals; -1, 0, and 1)
Spin Quantum number
indicates orientation; electrons can be spin up or spin down
Hund’s rule
every orbital in a subshell is singly occupied before any orbital can be doubly occupied. Electrons in singly occupied orbitals have the same spin
