Question

Greyish brown crystalline solid which on strong heating sublimes to form violet vapours

1Ammonium chloride

2Iodine

3Ammonium dichromate

4None of these​

Answer 1

Answer:

2 Iodine

Explanation:

When Iodine crystals are heated, the van der Waals forces are easily overcome and the molecule breaks into the gas phase. They sublime and form a purple colored dense vapor.