# Wavefunctions

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Explain why each of the following integrals must be 0 when the functions are hydrogen-like wavefunctions:

<2p1|Lz|3p-1> and <2p0|Lz|2p0>

Show that taking the lithium spin orbitals in a Slater determinant as 1sa,

1sb, and 1s(c1a+c2b) where c1 and c2 are constants gives a wavefunction that equals zero.

Tthe a and b are alpha and beta.

This problem also has the 2p0 but I thought the p orbital had -1 0 and 1.

https://brainmass.com/chemistry/general-chemistry/wave-functions-integral-equations-4290

#### Solution Preview

The answer is in the attachment. Thanks!

Answer:

<2p1|Lz|3p-1> = <R21 Y21| Lz | R31 Y2,-1>

= <R21 | R31> < Y21| Lz | Y2,-1>

= 0 < Y21| Lz | Y2,-1>

= ...

#### Solution Summary

This solution provides a detailed break down of equations in order to show how an integral has to be zero according to wavefunctions.

$2.49