Problem Twenty. An electron is in the second energy level of a hydrogen atom. The atom absorbs a photon which causes the electron to rise directly to the fifth energy level. $($THIS IS AN EXAM QUESTION.$)29.$ Find the change in the Bohr radius of the electron$$s orbit $($in nm$).($A$)2\mathrm{.}06($B$)3\mathrm{.}07($C$)1\mathrm{.}18($D$)1\mathrm{.}11($E$)4\mathrm{.}3030.$ Find the frequency of the absorbed photon $($in $1014$ Hz$).($A$)8\mathrm{.}42($B$)7\mathrm{.}25($C$)6\mathrm{.}91($D$)4\mathrm{.}85($E$)3\mathrm{.}40$