Advanced Qualification · A-002 Advanced components and circuits · A-002-001-001
What two elements widely used in semiconductor devices exhibit both metallic and non-metallic characteristics?
- A Galena and germanium
- B Galena and bismuth
- C Silicon and gold
- D Silicon and germanium
Correct answer: D — Silicon and germanium. From the official ISED question bank, verified word for word.
Why
Silicon and germanium are the two elements that act as semiconductors, meaning they conduct electricity better than insulators but not as freely as metals, giving them a mix of metallic and non-metallic traits. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.