X is a white powder. The tests below are carried out on X. • When a few drops of aqueous sodium hydroxide are added to a solution of X, no precipitate forms. • When X is warmed with aqueous sodium hydroxide, no gas is produced. • X produces a lilac flame colour when introduced into a flame. • When acidified aqueous silver nitrate is added to a solution of X, a yellow precipitate forms. Identify X.
- Aammonium bromide
- Bammonium iodide
- Cpotassium bromide
- Dpotassium iodide