- The possible j values for an f-electron according to Russell-Saunder's coupling are: * 7/2 and 5/2 only 3/2,5/2 and 7/2 only 1/2,3/2 and 5/2 only * 1/2 and 3/2 only * None of the above - The wavelength of the light that is required to excite rotation in molecules is in which range of the electromagnetic radiation? * Microwave range * VIS range * Between IR and VIS * UV range - Which one of the following pairs of molecules is vibrationally IR active/rotationally Raman inactive? N2/SF6SF6/H2CO2/CH4N2/NH3CCl4/H2