An octahedral complex with the formula $$\mathrm{CoCl}_3 \cdot \mathrm{nNH}_3$$ upon reaction with excess of $$\mathrm{AgNO}_3$$ solution gives 2 moles of $$\mathrm{AgCl}$$. Consider the oxidation state of $$\mathrm{Co}$$ in the complex is '$$x$$'. The value of "$$x+n$$" is __________.

In the given compound, the number of 2$$^\circ$$ carbon atom/s is ________.

Identify the major products A and B respectively in the following set of reactions.

Identify the product (P) in the following reaction: