\((b)\) Low spin complex
\((c)\) Show geometrical isomerisms geometrical isomer \((1\) cis \(+ 4\) trans)
\((d)\, Ma_3d_3\) type complex show fac and mer form and this complex is \(Ma_2b_2c_2\). type, so does not show fac and mer form
$(i) [pt\ (en)\ Cl_2]$
$(ii)\ [pt (en)_2]\ Cl_2$
$ (iii)\ [pt (en)_2 Cl_2]\ Cl_2$
$(iv)\ [pt (CH_3)_2 Cl_2]$