$(b)$ 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
gly $=$ ગ્લાયસિનેટો; bpy $=2,2$ '-બાયપિરિડિન
| ઉદીપક | પ્રક્રિયા |
| $(A)$ $TiCl_4$ | $(i)$ Wacker process |
| $(B)$ $PdCl_2$ | $(ii)$ Ziegler - Natta polymerization |
| $(C)$ $CuCl_2$ | $(iii)$ Contact process |
| $(D)$ $V_2O_5$ | $(iv)$ Deacon's process |