The problem statement
An electron going from 2p to 1s state in hydrogen sits up at the 2p for a while then jumps down.
with the given eqn
W=\frac {4*\alpha*\omega^3}{3*c^2}*\mid r12\mid^2
\mid r12\mid^2=\mid<1\mid x\mid2>\mid^2+\mid<1\mid y\mid2>\mid^2+\mid<1\mid z\mid2>\mid^2
alpha is...
if they are all perpendicular to each other then they can all lie on different axis of a 3D cartesian style graph. what is the average way are they all pointing?
\hat{C}[\hat{A},\hat{B}]=\hat{C}\hat{A}\hat{B}-\hat{C}\hat{B}\hat{A}
[\hat{A},\hat{B}]\hat{C}=\hat{A}\hat{B}\hat{C}-\hat{B}\hat{A}\hat{C}
These two can't be the same as they are operators and the order matters.