Which of the following is used primarily in semiconductors?
A
Alkali metals
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B
Alkaline Earth metals
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C
Metalloids
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D
Halogens
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E
Rare earth metals
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Solution
The correct option is D Metalloids
A metalloid is any chemical element which has properties in between those of metals and nonmetals, or that has a mixture of them. Metalloids are semiconductors because they are neither good nor poor conductors. All the elements commonly recognised as metalloids have been used in the semiconductor or solid-state electronic industries.