Answer the following questions: (i) Calculate the mass of compound (molar mass = ) to be dissolved…

Answer the following questions: (i) Calculate the mass of compound (molar mass = $256\text{ g mol}^{-1}$) to be dissolved in $75\text{ g}$ of benzene to lower its freezing point by $0\cdot48\text{ K}$ ($K_f = 5\cdot12\text{ K kg mol}^{-1}$). (ii) Write the IUPAC name of the complex $[\text{Cr}(\text{NH}_3)_4\text{Cl}_2]^+$. Which type of isomerism will be exhibited by it? (iii) Why do the transition elements have higher enthalpies of atomisation? In 3d series (Sc to Zn), which element has the lowest enthalpy of atomisation and why? (iv) Write balanced chemical equations for Carbylamine reaction and Diazotization reaction.