One mole of the coordination compound $Co(NH_3)_5Cl_3$ gives $3$ moles of ions upon dissolution in water. Furthermore,one mole of this complex reacts with $2$ moles of $AgNO_3$ solution to produce $2$ moles of $AgCl(s)$. The structure of the complex is:

  • A
    $[Co(NH_3)_3Cl_3] \cdot 2NH_3$
  • B
    $[Co(NH_3)_4Cl_2]Cl \cdot NH_3$
  • C
    $[Co(NH_3)_4Cl]Cl_2 \cdot NH_3$
  • D
    $[Co(NH_3)_5Cl]Cl_2$

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An aqueous solution of $1 \ mol$ of the coordination compound $[Co(NH_3)_5Cl_3]$ gives $3 \ mol$ of ions. If $1 \ mol$ of the same compound reacts with $2 \ mol$ of $AgNO_3$ to produce $2 \ mol$ of $AgCl_{(s)}$,what is the correct formula of the coordination compound?

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