The number of S = O bonds present in sulphurous acid, peroxodisulphuric acid and pyrosulphuric acid, respectively are :

CH₄ is absorbed on 1g charcoal at 0$$^\circ$$C following the Freundlich adsorpiton isotherm 10.0 mL of CH₄ is adsorbed at 100 mm of Hg, whereas 15.0 mL is adsorbed at 200 mm of Hg. The volume of CH₄ adsorbed at 300 mm of Hg is 10^x mL. The value of x is _________ $$\times$$ 10^-2.

(Nearest integer) [Use log₁₀2 = 0.3010, log₁₀3 = 0.4771]

1.22 g of an organic acid is separately dissolved in 100 g of benzene (K_b = 2.6 K kg mol^$$-$$1) and 100 g of acetone (K_b = 1.7 K kg mol^$$-$$1). The acid is known to dimerize in benzene but remain as a monomer in acetone. The boiling point of the solution in acetone increases by 0.17$$^\circ$$C. The increase in boiling point of solution in benzene in $$^\circ$$C is x $$\times$$ 10^$$-$$2. The value of x is ______________. (Nearest integer) [Atomic mass : C = 12.0, H = 1.0, O =16.0]

The value of magnetic quantum number of the outermost electron of Zn⁺ ion is ______________.