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NEET 2018
Exam
NEET
Year
2018
Subject
Chemistry
Chapter
Coordination Compounds

NEET 2018 · Chemistry · Coordination Compounds

Which one of the following ions exhibits d-d transition and...

Which one of the following ions exhibits d-d transition and paramagnetism as well?Which one of the following ions exhibits d-d transition and paramagnetism as well?Which one of the following ions exhibits d-d transition and paramagnetism as well?

Options

  1. AMnO4−{MnO}_{4}^{-}
  2. BCr2O72−{Cr}_{2}{O}_{7}^{2 -}
  3. CCrO42−{CrO}_{4}^{2 -}
  4. DMnO42−{MnO}_{4}^{2 -}

Correct answer

D. MnO42−{MnO}_{4}^{2 -}

Step-by-step solution

{CrO4−2Cr+6diamagnetic\begin{cases}{CrO}_{4}^{- 2} & {Cr}^{+ 6} & diamagnetic\end{cases}

{Cr2O7−2Cr+6diamagnetic\begin{cases}{Cr}_{2}{O}_{7}^{- 2} & {Cr}^{+ 6} & diamagnetic\end{cases}

{MnO4−Mn+7diamagnetic\begin{cases}{MnO}_{4}^{-} & {Mn}^{+ 7} & diamagnetic\end{cases}

{MnO4−2Mn+6Paramagnetic\begin{cases}{MnO}_{4}^{- 2} & {Mn}^{+ 6} & Paramagnetic\end{cases} Which one of the following ions exhibits d-d transition and paramagnetism as well?

Unpaired electron is present so d-d transition is possible.

Which one of the following ions exhibits d-d transition and paramagnetism as well?
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