2.335 g of compound X (empirical formal CoH₁₂N₄Cl₃) upon treatment with excess AgNO₃ solution produces 1.435 g of a white precipitate. The primary and secondary valences of cobalt in compound X, respectively are:

[Given Atomic mass: Co = 59, Cl = 35.5, Ag = 108]

If an excess of ${\mathrm{AgNO}}_3$ solution is added to 100 mL of a 0.024 M solution of dichlorobis (ethylenediamine) cobalt (III) chloride, then the number of moles of AgCl that will be precipitated is:

When 0.1 mol of CoCl₃(NH₃)₅ is treated with an excess of AgNO₃, 0.2 mol of AgCl is obtained. The conductivity of the solution will correspond to:

The correct order of the stoichiometrics of AgCl formed when AgNO₃ in excess is treated with the complexes:- CoCl₃.6NH₃, CoCl₃.5NH₃, CoCl₃.4NH₃, respectively, is :

1. 1 AgCl, 3 AgCl, 2 AgCl

2. 3 AgCl, 1 AgCl, 2 AgCl

3. 3 AgCl, 2 AgCl, 1 AgCl

4. 2 AgCl, 3AgCl,  1 AgCl

The sum of the coordination number and oxidation number of the metal M in the complex [M(en)₂(C₂O₄)]Cl is:

Cobalt(III) chloride forms several octahedral complexes with ammonia.
A compound among the following that does not give a test for chloride ions with silver nitrate at 25 °C is:

If 1/3rd of the total chlorine of the compound is precipitated by adding AgNO₃ to its aqueous solution, then the most likely structure of CrCl₃.6H₂O among the following is:

The existence of two different coloured complexes with the composition of [Co(NH₃)₄Cl₂]⁺  is due to: