Type of isomerism exhibited by compounds [Cr(H_2 O)_6] Cl_3,[Cr(H_2 O)_5 Cl^ Cl Cl_2 · H_2 O,[Cr(H_2 O)_4 Cl_2] Cl_2 . H_2 O. and the value of coordination number (CN) of central metal ion in all these compounds

NEET 2023

Exam: NEET
Year: 2023
Subject: Chemistry
Chapter: Coordination Compounds

NEET 2023 · Chemistry · Coordination Compounds

Type of isomerism exhibited by compounds [Cr(H_2 O)_6] Cl_3,[Cr(H_2...

Type of isomerism exhibited by compounds

\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3,\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{Cl}^{\mathrm{Cl}} \mathrm{Cl}_2 \cdot \mathrm{H}_2 \mathrm{O},\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_4 \mathrm{Cl}_2\right] \mathrm{Cl}_2 . \mathrm{H}_2 \mathrm{O}\right.

and the value of coordination number

(\mathrm{CN})

of central metal ion in all these compounds, respectively is:

Options

AIonisation isomerism, $\mathrm{CN}=4$
BSolvate isomerism, $\mathrm{CN}=6$
CGeometrical isomerism, $\mathrm{CN}=4$
DOptical isomerism, $\mathrm{CN}=4$

Correct answer

B. Solvate isomerism, $\mathrm{CN}=6$

Step-by-step solution

Solvate isomerism differ by whether or not a solvent molecule is directly bonded to the metal ion or merely present as free solvent molecules in the crystal lattice. -

\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3,\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{ClICl}_2 . \mathrm{H}_2 \mathrm{O}\right.

and \left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_4 \mathrm{Cl}_2\right] \mathrm{Cl}_2 2 \mathrm{H}_2 \mathrm{O}

show solvate isomerism. - Co-ordination number of

\mathrm{Cr}=6

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