The coordination compound [Co(NH3)4(CN)2]Cl:

Question

a) contains seven ligands.
b) has a coordination number of 6.
c) contains Co in the +2 oxidation state.
d) would not form a precipitate with AgNO3.

Answer 1

a) contains seven ligands.

The compound [Co(NH3)4(CN)2]Cl contains four ammonia molecules (NH3) and two cyanide molecules (CN-) as ligands. The total number of ligands is therefore six. Additionally, the chloride ion (Cl-) also acts as a ligand, making the total number of ligands seven.