Silicon is a metalloid because it has luster, but is brittle. Boron, arsenic, and antimony are metalloids with a variety of uses.
Silicon, which has the symbol Si and atomic number 14, is the second most abundant element after oxygen in the earths crust. But unlike carbon, silicon a metalloid -- in fact, its the most common metalloid on earth.
Silicon the semiconductor Silicon is neither metal nor non-metal; its a metalloid, an element that falls somewhere between the two. The category of metalloid is something of a gray area, with no firm definition of what fits the bill, but metalloids generally have properties of both metals and non-metals.
silicon (Si), a nonmetallic chemical element in the carbon family (Group 14 [IVa] of the periodic table). Silicon makes up 27.7 percent of Earths crust; it is the second most abundant element in the crust, being surpassed only by oxygen.
Criteria-basedElementIE (kcal/mol)Band structureSilicon188semiconductorGermanium182semiconductorArsenic226semimetalAntimony199semimetal4 more rows
Re: Why aluminum not metalloid? Answer: The physical & chemical properties of aluminum are more similar to the general properties of metals. Since the energy of the valence e- in the d-orbitals are very similar to the transition metals it can have various oxidation states.
Why is Si preferred over germanium?
Why is silicon usually preferred to germanium in the manufacture of semiconductor devices? Silicon is abundant on the earths surface and therefore cheaper than germanium. The PIV (Peak Inverse Voltage) rating of silicon is much higher than germanium and therefore can withstand much higher temperatures than germanium.
Why is si a semiconductor?
The material most frequently used in semiconductors is Silicon (chemical symbol = Si). Each Silicon atom is combined with four neighboring silicon atoms by four bonds. Silicon, a very common element, is used as the raw material of semiconductors because of its stable structure.