A metalloid, or semimetal, is an element having both
metallic and nonmetallic properties.
• Metalloids are solids that can be shiny or dull.
• They conduct heat and electricity better than non- metals but not as well as metals (semiconductors).
• They are ductile and malleable
• These elements, such as silicon (Si) and germanium (Ge), are usually good semiconductors.
Silicon