Generally, non-metals are not lustrous. Which of the following non metal is lustrous?
(a) Sulphur
(b) Oxygen
(c) Nitrogen
(d) Iodine
Ans. (d)
Shining metals are called lustrous.
Sulphur, oxygen, nitrogen are non-lustrous.
Iodine is a non-metal having lustrous appearance.
It has a shining surface (like that of metals).
Therefore option (D) is correct