Subject: Inorganic Chemistry · Chapter: Inorganic Spectroscopy · Topic: Mossbauer · Exam: NET JUNE 2011 · Marks: 2 · Difficulty: Medium
The correct value of isomer shift (in Mossbauer spectra) and its explanation for Fe(II)-TPP and Fe(III)-TPP respectively from the following are: (TPP= tetraphenylporphyrinate)
\[ \begin{array}{l} \text{(A) } 0.52\ \mathrm{mm\,s^{-1}} \\ \text{(B) } 0.45\ \mathrm{mm\,s^{-1}} \\ \text{(C) Increase in s electron density} \\ \text{(D) Decrease in s electron density.} \end{array} \]