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One mole of complex compound \( \mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}_{3} \) gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of \( \mathrm{AgNO}_{3} \) to yeild two moles of \( \mathrm{AgCl}_{(s)} \). The complex is:
(a) \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right] \mathrm{Cl} \cdot \mathrm{NH}_{3} \)
(b) \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}\right] \mathrm{Cl}_{2} \cdot \mathrm{NH}_{3} \)
(c) \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}\right] \mathrm{Cl}_{2} \)
(d) \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\right] \cdot 2 \mathrm{NH}_{3} \)
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