Take the potential energy of a hydrogen atom to be zero for infinite separation of the electron and proton.Then, according to the quantum theory the energy E_n of a state with principal quantum number n is proportional to: A)n B)n² C)1/n D)1/n² E)none of the above

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The energy of a state in a hydrogen atom, according to the Bohr model, is inversely proportional to the square of the principal quantum number n, which is represented as $E \propto \frac{1}{n^2}$. This is reflected in choice D.

Take the Potential Energy of a Hydrogen Atom to Be