The solubility of AgCl in it's solution is 1.25 $$\times$$ 10$$^{-5}$$ mol dm$$^{-3}$$. What is solubility product of AgCl?

The reagent used in Gatterman-Koch formylation of arene is

Which among the following statements is true for Pt[(NH$$_3$$)$$_2$$Cl$$_2$$] ?

What type of crystal structure from following has 52.36% packing efficiency?