Let the Hamiltonian of two nonidentical spin 1/2 particles be where Ej and En are constants having the dimensions of energy. The energy of the state for which the total spin is S = V2h and S h is: O €i + €2 O 7e1/4 + E2 O 3€1/4+ €2 O €1/2 - e2 O3E1/4 E2 O E1 - E2 O 7E1/4 E2
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