NEET UG CHEMISTRY MCQ: CO-ORDINATION COMPOUNDS

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Analyzing +4 | -1

Assertion : If in

{\left[ {{\text{Co(N}}{{\text{H}}_3}{{\text{)}}_{\text{6}}}} \right]^{ + 3}}\,,\,{\text{N}}{{\text{H}}_{\text{3}}}

is replaced by

{{\text{H}}_{\text{2}}}{\text{O}}

, same wave1ength will be absorbed by the complex :

Reason : It is a high spin species.

View answer and explanation

Correct option: D

If both Assertion & Reason are false

Option D is correct because replacing NH3 with H2O will change the ligand field strength and hence the wavelength absorbed, and [Co(NH3)6]+3 is a low spin complex, not high spin.

More Questions from CO-ORDINATION COMPOUNDS

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The complexes

\left[ {\mathrm{PtC}{\mathrm{l}_2}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_4}} \right]\mathrm{B}{\mathrm{r}_2}\mathrm{\;and\;}\left[ {\mathrm{PtB}{\mathrm{r}_2}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_4}} \right]\mathrm{C}{\mathrm{l}_2}\mathrm{\;}

are example for isomerism The total number of stereoisomers for the complex

\left[\mathrm{Cr}(\mathrm{Ox})_{2} \mathrm{ClBr}\right]^{3-}

(where

\text{ox =}

oxalate) is The value of

x

on the

{\left[ {\mathrm{Ni}{{\left( {\mathrm{CN}} \right)}_4}} \right]^x}

is: Excited state configuration of

\mathrm{M}{\mathrm{n}^{2 + }}

\mathrm{CuS}{\mathrm{O}_4}

decolourises on addition of KCN, the product is: The IUPAC name of

{\mathrm{K}_2}\left[ {\mathrm{Ni}{{\left( {\mathrm{CN}} \right)}_4}} \right]