Question

Match the complexes in List-I with their properties listed in List-II. Indicate your answer by darkening the appropriate bubbles of the 4$\times$4 matrix given in the ORS.

Answer 1

(A) The complex $\left[Co\right(N{H}_3{)}_4\left(H_{2}O{)}_2\right]C{l}_2$ shows geometrical isomers (cis-trans isomers). It is paramagnetic due to presence of unpaired electrons. The central metal (Co) ion has +2 oxidation state.
(B) The complex $\left[Pt\right(N{H}_3{)}_{2}C{l}_2]$ shows geometrical isomers (cis-trans isomers). The complex is diamagnetic as all the electrons are paired. The Pt metal ion has +2 oxidation state.
(C) The complex $\left[Co\right(H_{2}O{)}_{5}Cl]Cl$ cannot show geometrical isomerism. It is paramagnetic due to presence of unpaired electrons. The cobalt ion has +2 oxidation state.
(D) The complex $\left[Ni\right(H_{2}O{)}_6]C{l}_2$ is paramagnetic in nature due to presence of unpaired electrons.