Text Solution `1.05 xx 10^(-34) J s``2.11 xx 10^(-34) J s``3.16 xx 10^(-34) J s``4.22 xx 10^(-34)` Answer : B Solution : Since `E = - (13.6)/(n^(2)) eV` <br> `E_(1) = - 13.6 eV` <br> `E_(2) = - 3.4 eV` <br> `E_(3) = - 15.0 eV` <br> `E_(4) = - 0.85 eV` <br> Force above, we can see that <br> `E_(3) - E_(3) = 12.1 eV` <br> i.e., the electron must be making a transition from `n = 3 to n = 1` level. <br> `Delta L = (3 - 1) (h)/(2 pi) = (h)/(pi) = 2.11 xx 10^(-34) J s`
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I tried solving this problem by working out the difference of energies that would give 12.1eV. I noticed that -13.6-(-1.5)=12.1. However I wasn't able to progress from here and would appreciate any pointers/solutions. (Note: This isn't homework, it's from a worksheet I found online.) Thanks $\endgroup$ 1 |