82. Beer-Lambert\'s law can be used in conjunction with UV-Vis spectroscopy to d

Question

82. Beer-Lambert's law can be used in conjunction with UV-Vis spectroscopy to determine the
concentration of aromatic compounds.
T/F

83. Bonds between larger atoms can be generally said to have a lower frequency of stretching
vibrations.
T/F

84. The electronic transition occurs when an electron is excited from its highest occupied molecular
orbital to its lowest unoccupied molecular orbital.
T/F

85. In NMR spectroscopy, deshielded nuclei appear on the left of the spectra (downfield, at higher
delta(ppm)) and shielded nuclei appear on the right of the spectra (upfield, at lower delta(ppm)).
T/F

86. 1H NMR is in general more sensitive that 13C NMR due to the higher natural abundance of 1H in
molecules.
T/F

87. Desheilded nuclei can feel the magnetic field more easily
T/F

89. Nuclei in electron -poor environments will be see downfield as compared to nuclei in electron rich
environments (with the exception of aromatic groups)
T/F

If it's false, please explain

Explanation / Answer

Answers are:

82: true

83:True

84: true

85: true

86: true (also due to high magnetic moment of proton)

87: true

89: true

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