A coordination compound CrCl₃·4H₂O gives a white precipitate of AgCl with AgNO₃. The molar conductance of the compound corresponds to two ions. The structural formula of the compound is:
a) [Cr(H₂O)4Cl₂]Cl
b) [Cr(H₂O)6]Cl₃
c) [Cr(H₂O)₃Cl₃]·H₂O
d) [Cr(H₂O)5Cl]Cl₂