Consider the following wavefunction -11 211(ที่)a+(1) นุ่,21-1(ที่)x-(1) where ψ21-1 is a hydrogen-like wavefunction. show that φ(1,2) is an eigenfunction of l2-21 22 and s s1 822 what are the eigenvalues? notice: ψ2itl(r.) is the spatial part and (i) ( stands for the spin up or down, i stands for either particle 1 or 2) is the spin part of the completely antisymmetric wavefunction ф(1,2).