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hhhmortal
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Homework Statement
The expectation value <r> of the electron-nucleus separation distance 'r' is:
<r> = ʃ r |ψ|² dV.
(a) Determine <r> for the 1, 0, 0 state of hydrogen.
The Attempt at a Solution
Right, I've obtained the value for ψ = (1/πa³)^1/2 exp(-r/a)
I then replace dv by 4πr² dr.
I then put all of that in the equation above and try to integrate but I can't seem to go any further from here. Any help?
Thanks very much.