Orbitals and the periodic table Flashcards
Give the n, l and ml numbers for the following atomic orbitals.
Next card.
1s
n = 1
l = 0
ml = 0
2s
n = 2
l = 0
ml = 0
3s
n = 3
l = 0
ml = 0
2pz
n = 2
l = 1
ml = 0
2py
n = 2
l = 1
ml = -1
2px
n = 2
l = 1
ml = +1
3pz
n = 3
l = 1
ml = 0
3px
n = 3
l = 1
ml = +1
3py
n = 3
l = 1
ml = -1
List the five 3d atomic orbitals and give their n, l and ml numbers on the next flashcards.
3dxy, 3dyz, 3dxz, 3dx^2-y^2, 3dz^2
3dxy
n = 3
l = 2
ml = -2
3dxz
n = 3
l = 2
ml = +1
3dx^2-y^2
n = 3
l = 2
ml = +2
3dyz
n = 3
l = 2
ml = -1
3dz^2
n = 3
l = 2
ml = 0
Does it matter which 2p, 3p or 3d orbital has which ml number?
For subshells like 2π 3π, or 3π, it doesnβt matter which orbital is assigned to which ππ
value. The assignments are interchangeable and chosen based on convention, without affecting the physical or chemical properties of the atom.
Images of orbitals are on the summary sheet.
What do the red and blue mean?
Alternating wave phases.
What does wave phase refer to?
Oscillating sign (+ve or -ve) of a wavefunction (πΏ).
When πΏ>0, what is the phase?
(refer to summary sheet for a full diagram of a wave and +ve/-ve half cycles)
Positive.
What is a wavefunction?
Describes the probability distribution of electrons around an atom.
When πΏ<0, what is the phase?
Negative
n, l, ml and ms are the allowed eigenvalues for atomic orbital wavefunction.
What is n?
Give the range of numbers it can be.
Principle quantum number.
Can take any positive integer.
What is l?
Give the range of numbers it can be.
Secondary/angular/azimuthal/orbital quantum number.
0 to (n-1).