Question

Which of the following statements is FALSE ? Atoms undergo electronic transitions but not rotational or vibrational transitions B Typically, IR radiation causes vibrational transitions of molecules O c Compared to IR, UV radiations have longer wavelengths and less energy D Shorter the wavelength of a radiation higher the frequency

Answer 1

A. TRUE: - electronic transitions tend to accompany both rotational and vibrational transitions. These are often portrayed as an electronic potential energy cure with the vibrational level drawn on each curve. Additionally, each vibrational level has a set of rotational levels associated with it. B. TRUE: When molecules absorb IR radiation, transitions occur from a ground vibrational state to an excited vibrational state C. FALSE :- UV HAVE SHORTER WAVELNGTH AND HIGHR FREQUENCY D. TRUE: BECAUSE WAVLENGHTH IS RECIPROCAL OF FREQUENCY