Question: If an electron with spin down in the Psi (9,1,0) eigenstate in a hydrogen atom. If you want to measure the total angular momentum squared

If an electron with spin down in the Psi (9,1,0) eigenstate in a hydrogen atom. If you want to measure the total angular momentum squared (L^2) of the electron, what are the possible values that you could obtain? and with what probabilities would you obtain them?

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