Silicon and Germanium are which type of elements

Electrical Engineering XYZ MCQs

Silicon and Germanium are which type of elements:

  1. Hexavalent
  2. Trivalent
  3. Tetravalent
  4. Pentavalent

Correct answer: 3. Tetravalent

Related PDF Download: Diodes and Rectifiers Handbook


  • Tetravalent elements are those that have four valence electrons in their outermost shell.
  • Both Silicon (Si) and Germanium (Ge) belong to group 14 of the periodic table, also known as the carbon group.
  • Elements in group 14 typically have four valence electrons, which means they can form four covalent bonds with other atoms.
  • Silicon and Germanium commonly form covalent bonds with other elements, particularly with themselves and other non-metals, such as oxygen and hydrogen, to create a variety of compounds, including silicon dioxide and germanium dioxide. Related reading: Semiconductor Manufacturing Techniques
  • This tetravalency is crucial for their application in semiconductor devices like transistors, where their ability to form stable covalent bonds allows for the precise control of electron flow, a fundamental property for electronic devices.

Also download: Solid State Device Theory Handbook

Leave a Reply