Week 1 Molecular to Crystal Bonding Flashcards
why is the expectation value important
it is the average value for a sample of measured values
it is very useful for approximations
what does the angular momentum depend on
what orbital you are in
e.g s = 0, p = 1 etc
what is the general energy equation for atomic orbitals
En = -Z^2ER / n^2
what two things are needed to solve problems
linear combinations of atomic orbitals
energy expectation value
what is the Born-Oppenheimer Approximation
Ignore Nuclear Motion
where is bonding at a maximum/minimum between two equal atoms
bonding is at a maximum at the centre r/2
boding is at a minimum at either of the atoms
which has a higher energy in phase or out of phase anti-bonding
out of phase since it has no minimum
define dissociation energy
energy required to break a bond
