Saved Bookmarks
| 1. |
Shows the energy levels for an electron in a certain atom. Which transition shown represented the emission of a photon with the most energy? A. IIIB. IVC. Intensity of the characteristic S-rays depends on the electrical power given to the X-rays tubeD. II |
|
Answer» Correct Answer - A `E = Rhc[(1)/(n_(1)^(2))-(1)/(n_(2)^(2))]` `E_((4 rarr 3))=Rhc[(1)/(3^(2))-(1)/(4^(2))]` `=Rhc[(7)/(9 xx16)] = 0.05 Rhc` `E_(4 rarr 2)=[(1)/(2^(2))-(1)/(4^(2))]` `=Rhc[(3)/(16)]=0.2 Rhc` `E_((2 rarr 1))=Rhc[(1)/((1)^(2))-(1)/((2)^(2))]` `= Rhc [(3)/(4)] =0.75 Rhc` `E_((1 rarr 3))=Rhc [(1)/((3)^(2))-(1)/((1)^(2))] = (8)/(9) Rhc = -0.9 Rhc` `:.` Thus, lll transition gives most energy. |
|