What type of atoms are added to molten silicon in order to increase the number of free electrons?
A) pentavalent
B) trivalent
C) covalent
D) positive

Question

Quizplus · Accepted Answer

Pentavalent atoms, such as phosphorus or arsenic, have five valence electrons, which makes them suitable for doping silicon to increase the number of free electrons. When these atoms are added, they create excess electrons that can move freely throughout the material, making it a better conductor.

What Type of Atoms Are Added to Molten Silicon in Order