How does the rule of Mutual Exclusion help in predicting the symmetry in case of and
molecules?
The rule of mutual exclusion states that in molecules with a center of inversion (i.e., centrosymmetric molecules), vibrational modes that are IR active are Raman inactive and vice versa. For (H_2O), the molecule is ______ ___ _________ ________ _________ _________ ____ __________ ________ _____ ________.
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A photon of visible light has a wavelength of . Calculate its
(i) wavenumber
(ii) frequency
(iii) energy per mol
What is meant by polarizability of a molecule?
Calculate the ESR frequency of an unpaired electron in a magnetic field of 3000 G (0.3 T).
[Given: ;
; and
]
Explain the origin of atomic spectrum.
What are different mechanisms that contribute to the relaxation of nuclear spins in the excited state? Explain any one of them.
Assuming that the force constants of H-Cl and D-Cl are the same, calculate the fundamental vibration frequency of D-Cl if that of H-Cl is .
Aluminium has the highest nuclear charge, so its 2p peak should have the largest binding energy, but shielding effects reverse this trend.
Justify your answer.