20 terms

# Chemistry 20A

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What is a Node
It is the point of zero displacement, no electrons are found
It is a spherical surface where the probability of an electron being found is 0 and the probability density equals 0 as well
What is a n Angular Node
It is a plane dividing wave functions by phase (dividing neg and positive)
Formulas: Total # of nodes
n-1
n-l-1
Formulas: # of angular nodes
l ( angular momentum #)
3s orbitals have __ radial nodes and __ angular nodes
2 radial nodes and 0 angular nodes
5p orbitals have __ radial nodes and __ angular nodes
3 radial nodes and 1 angular nodes
8d orbitals have __ radial nodes and __ angular nodes
5 radial nodes and 2 angular nodes
Radial probability density depends on # of ...
Radial probability depends on number of RADIAL NODES b/c the probability of an electron existing there is 0
Paramagnetic
attracted to magnetic fields b/c not all electron are paired up to MAXIMIZE DIRECTION
Diamagnetic
Repulsed by magnetic fields b/c electrons are paired up
When dealing with prbability density, what does the dv stand for? and what does it equal?
dv=change in volume and it equals 1 because highest value of probability is 1 (unless otherwise specified what volume your are give, i.e., over 1nm cubed volume)
units of probability is usually
usually A to the -3/2 power
If you have a well defined amplitude and wavelength, what can you tell about the uncertainty of the position and momentum
It would have a lager uncertainty for position but a small uncertainty for its momentum
momentum and position are ___ related
inversely related (as one goes up, the other goes down)
the letter Q is...
Q is the charge of a particle
R is the...
R is the distance btwn nuclei
Z is the...
nuclear charge (atomic number)
Units of Probability desity is
A to the -3rd power (b/c you square it)