Exercise 1

The complex ions ${\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\left({\mathrm{NO}}_2\right)\right]}^{2+}$ and ${\left[\mathrm{Co}\left({\mathrm{NH}}_3\right)\mathrm{s}\left(\mathrm{ONO}\right)\right]}^{2+}$ are called

$\mathrm{A}$ complex shown below-

$\mathrm{A}$ square planar complex represented as it will show which isomerism -

Three arrangements are shown for the complex, ${\left[\mathrm{Co}\left(\mathrm{en}\right){\left({\mathrm{NH}}_3\right)}_2{\mathrm{Br}}_2\right]}^{+}.$ Which one is the wrong statement-

The optically active species among the following is-

What are the shape and the oxidation number of the copper atom, respectively, for the complex ion, ${\left[\mathrm{Cu}{\left({\mathrm{NH}}_3\right)}_4{\left({\mathrm{OH}}_2\right)}_2\right]}^{2+}?$

The number of geometrical isomers for octahedral ${\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_2{\mathrm{Cl}}_4\right]}^{-},$ square planar ${\mathrm{AuCl}}_2{{\mathrm{Br}}_2}^{-}$ are:

Which of the following is correct order of stability?