A coordination compound of cobalt has the molecular formula containing five ammonia molecules, one n — Coordination Compounds Chemistry Question

Question

A coordination compound of cobalt has the molecular formula containing five ammonia molecules, one nitro group and two chlorine atoms for one cobalt atom. One mole of this compound produces three moles of ions in an aqueous solution. The aqueous solution on treatment with an excess of $AgNO_3$ gives two moles of AgCl as a precipitate. The foumula of this complex would be