Which one of the following is not a semi-conductor
Correct answer: D. As
- A. Si
- B. Ge
- C. Se
- D. As
Explanation
The correct answer is Option D: As. Arsenic (As) is not a semiconductor in its elemental form. It is often used as a dopant in semiconductor materials such as silicon to alter their electrical properties, but it does not function as a semiconductor on its own.Option A: Si - Silicon is a fundamental semiconductor material, crucial to the electronics industry.Option B: Ge - Germanium is another semiconductor, though less common than silicon in modern applications.Option C: Se - Selenium can exhibit semiconductor properties in certain allotropic forms, making it a possible, though less conventional, semiconductor material.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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