Which of the following statement best explains the vibrational stretc described

Question

Which of the following statement best explains the vibrational stretc described above (use only the ranges provided) for inorganic molecules based on the data above. Based on the data, IR does not seem reliable for identifying functional groups in metal complexes. Though there are trends observable the observed frequency stretches are not in the visible range and, therefore, not detectable with IR. A The data supports a different dependency of wavenumber for the bond stretch on the mass of the atoms (directly proportional) and the strength of the bond (inversely proportional) for inorganic molecules as we studied for organic molecules. In addition, the data supports the conclusion that the metal strengthens the triple bond in the CN and C O ligands. The data supports the same dependency of wavenumber for the bond stretch on the mass of the atoms (directy proportional) and the strength of the bond (inversely proportional) for inorganic molecules as we studied for organic molecules. In addition, the data supports the conclusion that the metal strengthens the triple bond in the C N and C O ligands Based on the data, IR does not seem reliable for identifying functional groups in metal complexes. There are no trends observable based on the mass of the atoms or the strengths of the bonds O D The data supports the same dependency of wavenumber for the bond stretch on the mass of the atoms (inversely proportional) and the strength of the bond (directly proportional) for inorganic molecules as we studied for organic molecules. In addition, the data supports the conclusion that the metal weakens the triple bond in the CaN and C-O ligands

Explanation / Answer

Answer is "E"

i.e, the data supports the same dependency of the wavenumber for the bond strech on the mass of the atoms (inversily proportional) and strength of the bond (directly proportional) for inorganic molecule as we studied for oganic molecule. In addition the data supports the conclusion that metal weakens the triple bond in CO and CN ligands because CO and CN ligands involves in back pi bond with metal and weakens the bond strength between C, O and N.

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