Which one of the following is not a semiconductor?
Correct answer: E. None of them
- A. Si
- B. Ge
- C. Se
- D. Sn
- E. None of them
Explanation
ll the listed elements, Si, Ge, Se, and Sn, are semiconductors. Therefore, the answer to "Which one of the following is not a semiconductor?" is:(d) None of the above.Each element listed exhibits the characteristic properties of a semiconductor, namely:Conductivity between that of conductors and insulators: They have a resistivity that is higher than conductors but lower than insulators.Controlled conductivity through doping: Their conductivity can be significantly increased or decreased by introducing impurities (dopants) into their crystal lattice.Light sensitivity: Some semiconductors, including silicon and germanium, can generate electricity when exposed to light, making them crucial for solar cells.Therefore, as all four elements exhibit these characteristics, none of them can be accurately described as not being a semiconductor.
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About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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