The longest wavelength doublet absorption is observed at 589 and 589.6nm. Calculate the frequency of each transition and energy difference between two excited states. The longest wavelength doublet absorption is observed at 589 and 589.6nm. Calculate the frequency of each transition and energy difference between two excited states. November 12, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , NCERT Exemplar Class 11 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related