22.214.171.124 Solution esdb2-b
Continuing the previous question, evaluate the standard deviations in energy, square angular momentum, and angular momentum in the 2p state using inner products.
For energy you have,
or multiplying out, noting that , so that 0,
which is zero. The same way, 0.
For angular momentum, you have, since the expectation value is zero,
or multiplying out,
which multiplies out to , so itself is .