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Which column elements are combined to make compound semiconductors?

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Which column elements are combined to make compound semiconductors?

(a) First and fourth

(b) Fifth and sixth

(c) Second and fourth

(d) Third and fifth

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Asked question is from Properties of Semiconductors in division Semiconductors of Engineering Physics II

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Right choice is (d) Third and fifth

The best explanation: The compound semiconductors are made by combining the third and fifth column elements. Such as GaAs are made by combining third and fifth column elements.

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