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Prove that the degeneracy of the nth energy level in the Hydrogen atom is n²
(disregarding electron spin). Use the fact that the Hydrogen states are labeled by three integer quantum numbers, m, l and n, where −l ≤ m ≤ l and 0 ≤ l < n.

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Prove that the degeneracy of the nth energy level in the Hydrogen atom is n2(disregarding electron spin). Use the fact that the Hydrogen states are labeled by three integer quantum numbers, m, l and n, where −l ≤ m ≤ l and 0 ≤ l < n.