PDA

View Full Version : Ionisation Energy


jayjay112
Apr7-09, 04:36 AM
The Lyman spectrum (n1 = 1) spectrum of Li2+ contains consecutive lines with wavelengths of 13.5 nm and 11.4 nm. What is the ionization energy of Li2+?


I know ive to use the reciprocal of the wavelength = R etc eqation but what value do i use for n, and then what do i do??