Metals as we know are very useful in all fields , industries in particular. Non - Metals are no less in any way . Oxygen present in air is essential for breathing as well as for combustion . Non metals form a large number of compounds which are extremely useful, eg, ammonia, nitric acid, sulphuric acid , etc. Non- metals are found to exist in three states of matter. Only solid non-metals are expected to be hard however they have low density and are brittle . They usually have low melting and boiling point and are poor conductors of electricity. Which of the following is a non metal but is lustrous?

Options

A. Phosphorus
B. Sulphur
C. Bromine
D. Iodine

Answer

D