Silicon in silicon molybdenum rod is a chemical element, its chemical symbol is Si, formerly known as silicon. Atomic number 14, relative atomic mass 28.09, two allotropes, amorphous silicon and crystalline silicon, belong to the IVA group of metalloids on the periodic table. Silicon is also an extremely common element, but it rarely occurs in nature in elemental form, but in the form of complex silicates or silicas, widely found in rocks, gravel, dust. Silicon reserves in the universe rank eighth. In the crust, it is the second most abundant element, making up 25.7% of the total mass of the crust, second only to oxygen (49.4%).
The origin of the name silicon in sillybdenum rods, comes from the Latin silex, silicis, meaning flint (flint). In the early Republic of China, scholars originally translated this element as "silicon" and made it read "xi (gui side can indeed be pronounced xi, such as 畦字)" (also, the "silicon" character is a variant of the character "砉", pronounced huo). However, in the time and space at that time, because the pinyin scheme had not yet been popularized, it was generally mispronounced as gui. Since the translation of chemical elements is mostly transliterated in addition to the original Chinese nomenclature, the Chemical Society noticed this problem and created the word "silicon" to avoid misreading. Taiwan continues to use the word "silicon" to this day.
In 1787, Lavoisier first discovered the presence of silicon in rocks. In 1800, however, David mistook it for a compound. In 1811, Guy-Lussac and Thénard may have prepared impure amorphous silicon by mixing and heating elemental potassium and silicon tetrafluoride. Silicon was first discovered as an element by Bezelius in 1823, and an amorphous silicon was refined a year later in much the same way as that used by Guy-Lussac. He then purified the elemental silicon by repeated cleaning.
