題組內容

2. A hydrogen atom in a state having a binding energy (the energy required to remove an electron) of 0.85 eV makes a transition to a state with an excitation energy (the difference between the energy of the state and that of the ground state) of 10.2 eV.

(a) What is the energy of the photon emitted as a result of the transition? 

詳解 (共 1 筆)

助人為本
助人為本
詳解 #7384732
2026/05/26
這題要先搞懂兩個名詞分別為blinding energy和excitation energy
分別是結合能和激發能
結合能的意思就是你要花多少力氣使電子恢復到自由態
激發能的意思這個能階相較於基態差了多少能量
所以有了這些概念即可解題
題目給結合能0.85eV，代表說要給他0.85eV的能量才能回到0
所以起始能量為-0.85eV
然後激發能為10.2eV，而氫原子基態能量為-13.6eV(要背)
所以最終能量為
6a15b112cbae1.jpg
最後一步相減求出光子能量
6a15b1348a16a.jpg