(3) \( \left[ CoCO _{2}\left( NO _{2}\right)( Br )\right] NO _{3} \)
- \( \left[ Pt \left( NH _{3}\right)_{4}\left( NO _{2}\right) Br \right] Cl _{2} \)
3. \( \left.[ Co Cen )_{2}\left( SO _{4}\right)( CN )\right] NO _{3} \)
4. \( \left[ O \left( M _{2} O _{3}\right)\left\{ CH _{3} CO _{0}\right)( en )\right] SO _{4} \)
3. \( \left[ Pt \left( NH _{3}\right)_{4}( CN ) CONO _{2}\right] Cl \)
\( 6\left[ Ca \left( H _{2} O \right)_{4} Br Cl \right] CO _{3} \)
7. \( \left.\left[ Pt ( en )_{2} C CH _{3} CO 0\right)_{2}\right] Cl _{2} \)
