At the polar moment of Rnm transition, you can confirm thata) nunca can be ser 0b) is a very important magnitude in Raman spectroscopyc) is related to the probability of spectroscopic transactionsd) is related to the selection rules

A)A molecule which possesses an inversion center is said to be centrosymmetric. We have seen that IR and Raman spectroscopy can be used to distinguish between alternative structures of molecules. If one is considering two possible structures of a molecule, one of which is centrosymmetric and one of which is not (for example, a molecule with formula ML4 could be square-planar or tetrahedral), the following rule is useful. In a centrosymmetric molecule, a given vibrational mode cannot be active in BOTH the IR and Raman spectrum, while in a non-centrosymmetric molecule, there is no such exclusion. Look at the character tables for a number of point groups and justify this rule.

In Fourier transformed spectroscopya) use a very sensitive monocromador systemb) the detection time is inferior to conventional spectroscopiac) the signal is detected depending on the frequencyd) occurs simultaneously at all frequency intervals

What is the symmetry element corresponding to (a) Cn, (b) s, (c) i, (d) Sn? What is the symmetry operation corresponding to ?53?

What are the nature of spectrum differences between Uv-visible and Fluorescence spectroscopy analysis?  Please answer shorty at your own words. Answer should be to the point.

Determine the point group for EACH of the possible structural arrangements of (a) AsF2Cl3, and (b) AsF3CI2. Assuming a static structure, indicate the number and relative intensities of the signals that you would expect to see in the 19F NMR spectrum of each molecule. Hint: draw their VSEPR structures could be helpful.

What resolution is required to seperate two lines at wavelength1 and wavelength2?

(a) Calculate the energy difference between the two spin states of 1H and of 13C in a magnetic field of 6.8 T. 1H 4.0 1.91e-29 X J 13C 4.80e-33 X J (b) What is the precession frequency of a 'H nucleus at this magnetic field? Of a 13C nucleus? 1H 4.0 290 MHz 13C 4.0 73 MHz (c) At what magnetic field do protons precess at a frequency of 300. MHz? [4.0 7.04

After an induced absorption process of an intensity, there are (without population inversion) transitions between:a) vibrational and rotational levels in the infrared region, we obtainb) vibrational levels exclusively in the infrared regionc) vibrational and rotational levels in the microwave regiond) transitions between nuclear spin levels in the radio frequency region

What is “total luminescence spectrum”? (