GaAs
Step 1: Silicon (Si) and Germanium (Ge) are well-known semiconductors commonly used in electronics.
Step 2: Cadmium Sulfide (CdS) and Gallium Arsenide (GaAs) are compound semiconductors used in various electronic and photonic devices.
Step 3: Antimony (Sb), however, is a metalloid and is typically not classified as a semiconductor; it does not exhibit the semiconductive properties like variable conductivity or bandgap manipulation typical of semiconductor materials.
Step 4: Therefore, Sb is not a semiconductor, correctly aligning with option (B).
Kepler's second law (law of areas) of planetary motion leads to law of conservation of
Kepler's second law (law of areas) of planetary motion leads to law of conservation of