Please tell what's the correct hybridisation, magnetic behaviour, and formula of geometrical or optical isomer for the complexes 
$$\begin{gathered} \left[Cr\right(N{H}_3{)}_{4}C{l}_2\left]Cl \\ \right[Co\left(N{H}_3{)}_{4}C{l}_2\right]Cl \\ \left[Co\right(N{H}_3\left)\right(en{)}_{2}O{]}^{+2} \\ \left[Ni\right(H_{2}O{)}_2\left(C_2{O}_4{)}_2{]}^{-2} \\ \right[Co(en{)}_{2}C{l}_2{]}^{+2} \end{gathered}$$