Compound $M$ is a white solid. It is the chloride belonging to a Period 3 element. Details of some reactions that begin with compound $M$ are shown below. compound $M$ + non‑polar solvent → colourless solution compound $M$ added in small portions to water → steamy fumes, $Q$; colourless solution, $R$ fumes $Q$ tested with moist blue litmus paper → paper turns red solution $R$ + a few drops of $\text{NaOH(aq)}$ + excess $\text{NaOH(aq)}$ → white precipitate; dissolves to give a colourless solution What is compound $M$?
- Aaluminium chloride
- Bmagnesium chloride
- Cphosphorus pentachloride
- Dsodium chloride