Editing Openai/6946f4fa-e8bc-800b-b77e-c62f6390a97c (section)

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A photon with a wavelength of 500 nm promotes an electron from
n=2n = 2n=2 to n=3n = 3n=3. What can be deduced from this information?

===== 一個波長為 500 nm 的光子，剛好使電子由 =====
n=2n = 2n=2 躍遷至 n=3n = 3n=3。根據此資訊可以推論什麼？

===== Photon energy is related to wavelength by: =====

E=hcλE = \frac{hc}{\lambda}E=λhc
This energy equals the energy difference between two levels.

===== 光子的能量由下式決定： =====

E=hcλE = \frac{hc}{\lambda}E=λhc
題目中「剛好能促使電子躍遷」表示：
* 光子的能量 = 兩個能階之間的能量差

而不是某一個能階的「絕對能量」。

===== 👉 the difference in energies between n=2n = 2n=2 and n=3n = 3n=3 =====
👉 n = 2 與 n = 3 之間的能量差