describe, explain, and write equations for, the reactions of the chlorides NaCl, MgCl₂, Al Cl₃, SiCl₄, PCl₆ with water including the likely pHs of the solutions obtained

describe, in simple terms, the lattice structure of a crystalline solid which is: (a) giant ionic, including sodium chloride and magnesium oxide (b) simple molecular, including iodine, buckminsterfullerene \( C_{60} \) and ice (c) giant molecular, including silicon(IV) oxide, graphite and diamond (d) giant metallic, including copper

describe the relative reactivity of halide ions as reducing agents