Question

1. Give the Rydberg mathematical relationship of the wavelength of light in the hydrogen spectrum. 2. Bohr made several assumptions about the orbit of the electron around the hydrogen nucleus. Using equations, explain at least two assumptions. 3. (Multiple Choice) Will the scale reading of the spectroscopic measurement of the lines in the helium spectrum we measure be a.) the same as the wavelength of the light b.) proportional to the wavelength of light c.) independent of the wavelength of light 4. Given the equation: E= -21.79 X 10" (#26) What energy does it solve for? What does it mean when n=1? What does it mean when n=7?

Answer 1

1). The relation betiseen Rydberg's constant ca and Wavelength () 1 of the light is t ert.172 where n = lower energy level 72: Higher ererey level for 'ii atom z = atomic = 1 numbey ») 97 an electron jumps from lower energy level to Higher energy level it has to absorb some energy and If an eketron jumps from Highey energy level to lower energy level, it has to emit some energy That energy is integral multiple of ho' E = nho E2-E, - ho DE:60 . The Angular momentum of an electron is an integral 1 multiple of the (ie) jmur=nh Spectroscopic lines measurement bex the same as wavelength of but proportional to the wavelength of the light -19 91 n=1 -21-79*10 - 19 = -21.79X10 -19 n=2 - -2.7910 -19 =-545x10 J