Which of the following non-metal have a lustrous appearance?

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Carbon

Chlorine

Iodine

Fluorine

answer is C.

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Detailed Solution

Iodine has a lustrous appearance.
Iodine is a non-metal. Iodine has a metallic lustre because its atoms are arranged in a three-dimensional crystal structure, reflecting most of the light that strikes them. Iodine is a shiny non-metal. Metals have lustrous properties. But some non-metals, such as iodine, also show lustrous properties because iodine atoms have a three-dimensional crystal structure which reflects most of the light that falls upon them. Carbon, fluorine and iodine are non lustrous.

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