Chemistry - Complete s-block Question with Solution | TestHub

Statement (A) is correct because alkali metal halides are ionic compounds that form stable, colorless crystalline lattices with high melting points.

Statement (B) is correct because the standard enthalpy of formation (${\Delta }_f{H}^{\circ }$) consistently becomes less negative from fluoride to iodide for any given alkali metal.

Statement (C) is incorrect because LiF is sparingly soluble due to high lattice energy, while CsI is sparingly soluble due to low hydration energy.

Statement (D) is incorrect because the covalent character of LiCl makes it soluble in organic solvents, including both ethanol and pyridine.