Answer to Question #62190 in General Chemistry for unni

Question

1. a) Calculate the ionisation energy of rubidium per atom, if light of wavelength 5.84  108 m produces electrons with a speed of 2.450  106 ms1. (5)
[Hint: Assume that the threshold frequency refers to the frequency corresponding to the ionisation energy.]
b) Assume that the electron in Li2+ ion is in third orbit. Calculate (5)
i) the radius of the orbit, and
ii) the total energy of the electron
[Hint: Li2+ ion also has atomic spectra similar to hydrogen atom. while applying relevant equations, use Z = 3.]