ℎ ∆ ℎ = V ̅ ( , () ) − Δ ̅ = 1/ 1 1 1 2 = 2 ( + ) 1 = 3 1 3 3 Δ Δ = Ω − ( + + ) 1 3 2 m 3 ̅ atom H ̅ − = Δ ≡ | , , = = = | , ,