Concept:Elemental semiconductors consist of a single chemical element from Group IV of the periodic table, such as Silicon (Si) or Germanium (Ge). Compound semiconductors are made from two or more elements (e.g., Groups III-V or II-VI).
Formula:$$\text{Elemental Semiconductors: } \text{Silicon (Si), Germanium (Ge)}$$
$$\text{Compound Semiconductors: } \text{GaAs, InP, CdS, GaN}$$
Solution:- Silicon is a single chemical element (Group IV, atomic number 14) and is the most widely used elemental semiconductor.
- GaAs, CdS, and InP are compound semiconductors formed from combinations of different elements.
Why other options are incorrect:- Option A: Gallium Arsenide is a binary III-V compound semiconductor.
- Option C: Cadmium Sulfide is a II-VI compound semiconductor.
- Option D: Indium Phosphide is a III-V compound semiconductor.
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