# Answer to Question #74417 in Atomic and Nuclear Physics for Deepesh Tripathi

Question #74417

The ratio of areas within the electron orbits for the first excited state to the ground state for the hydrogen atom is

Expert's answer

Radius of the n orbit rn ∝ n2.

For ground state n = 1 and for the first excited state n = 2.

Therefore

r2 / r1 = 22 / 1 = 4 / 1 = 4:1

For ground state n = 1 and for the first excited state n = 2.

Therefore

r2 / r1 = 22 / 1 = 4 / 1 = 4:1

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