Element z reacts with bromine to form an ionic compound zbr2
a) state with reasons i) the physical properties of zbr2 at room temperature ii) whether z is a metal or non metal.
b)what is the formula of the oxide formed when z reacts with oxygen?

The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be: