Question

Write the geometrical isomers of [Co(NH₃)₄Cl₂].

Answer 1

The complex [Co(NH₃)₄Cl₂] is an octahedral coordination compound, and it exhibits geometrical isomerism because the two chloride ions can be positioned differently relative to the four ammonia molecules around the central metal ion (Co).

1. Cis isomer - The two Cl ions are adjacent to each other (90°).
   
2. Trans isomer - The two Cl ions are opposite each other (180°).