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Q.

Is it true that iodine is lustrous?


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a

True

b

False  

answer is A.

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Detailed Solution

The above statement is true.
Generally, non-metals are not lustrous. Iodine is not a metal. Because iodine atoms exist in a three-dimensional crystal structure, it has a metallic luster and thus reflects the majority of the light that falls on it. Iodine is a brightly colored solid with a metallic luster. This solid is relatively volatile, and when heated, it sublimes to form a violet-colored gas.
 
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