Absorption Spectrum of Iodine Vapour

Description

Aim:- To study the absorption spectrum of  Iodine vapours & also calculate (i) Electronic Energy Gap, (ii) Vibrational Energies  & (iii) Force Constant for excited states. Setup Contains:-1) A Spectrometer 6 Inch. 2) Long Absorption Glass Tube & Filament. 3) Light Source.(Mercury Source). 4) Diffraction Grating. 5) Spirit Level. 6) Power Supply for iodine tube. 7) Suitable Stands. 8) Connecting Leads. 9) Reading Lens. Formula Used:-The following formula is use for calculation. a) For Electronic Energy Gap:- E1 = hcv1 b) For Vibrational Energy:- E2-E1= hc ? v c) For Force Constant:- k = 4?2 m`(c?v)2.