Nonmetal Silicon

The second abundant element on non-metallic silicon is non-metallic silicon, which accounts for about 28% of the Earth's crust. It exists only in the form of a combination of silica (silica) and silicate rocks and minerals. The most common form of silica is quartz, which includes sand and vermiculite. Silicate is a salt of silica combining oxygen with other elements such as aluminum, magnesium, calcium, sodium, iron and potassium.

On the left side of most nonmetals in the periodic table are semimetals such as boron, silicon and germanium, which behave like nonmetal, and are included here for comparison. In this sense, they can be regarded as the most metallic nonmetallic element. Based on common properties, non-metals can be classified as reactive non-metals and inert gases. And metalloids and two non-metallic classes are weakly non-metallic, moderately non-metallic to strongly non-metallic (oxygen and four non-metallic halogens), almost chemically weak. Similar categories appear in the form of metals, weak metals (after transition metals), medium metals (most transition metals), strong metals (alkali and alkaline earth metals, lanthanides and elements). , And relatively inert (noble metal transition metal)

In chemistry, non-metallic (or non-metallic) is a chemical element that is almost devoid of metal properties. Physically, nonmetals tend to have a relatively low melting point and boiling point, and when density is solid, they are almost brittle and generally have low thermal and electrical conductivities; chemically a relatively high ionization It tends to have energy. Values ​​of electron affinity and electronegativity. We will acquire or share electrons when electrons react with other elements and compounds. 17 Elements are usually classified as nonmetals, mostly gases (hydrogen, helium, nitrogen, oxygen, fluorine, helium, chlorine, argon, helium, neon, xenon), one liquid (bromine), some are solids . (Carbon, phosphorus, sulfur, selenium, iodine) Metals such as boron, silicon and germanium are sometimes considered nonmetals