Using the same shifted energy scale in which the fifth Bohr orbit of hydrogen is defined to have zero energy, what energy is assigned to a completely free electron at infinite separation?
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Using the same shifted energy scale in which the fifth Bohr orbit of hydrogen is defined to have zero energy, what energy is assigned to a completely free electron at infinite separation?

G1 Physics · Accepted Answer

On the original scale, E(∞) = 0 and E₅ = −0.544 eV. The shifted scale is E′ = E−E₅. Hence, E′(∞) = 0−(−0.544) = +0.544 eV. Correct option: C.