The correct order of the isomeric shift in Mössbauer spectra (⁵⁷Fe source) of iron compounds is · ABC26IN1172
Subject: Inorganic Chemistry · Chapter: Inorganic Spectroscopy · Topic: Electronic Spectra Tanabe Sugano · Exam: CSIR NET JUNE 2014 · Marks: 2 · Difficulty: Hard
The correct order of the isomeric shift in Mössbauer spectra ($^{57}\mathrm{Fe}$ source) of iron compounds is
(a)$\mathrm{Fe(II)} > \mathrm{Fe(III)} > \mathrm{Fe(IV)}$
(b)$\mathrm{Fe(III)} > \mathrm{Fe(II)} > \mathrm{Fe(IV)}$
(c)$\mathrm{Fe(IV)} > \mathrm{Fe(III)}\ \mathrm{Fe(II)}$
(d)$\mathrm{Fe(IV)} > \mathrm{Fe(II)} > \mathrm{Fe(III)}$
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