Αποτελέσματα Αναζήτησης
Silicon makes up 27.7% of the Earth’s crust by mass and is the second most abundant element (oxygen is the first). It does not occur uncombined in nature but occurs chiefly as the oxide (silica) and as silicates. The oxide includes sand, quartz, rock crystal, amethyst, agate, flint and opal.
- Phosphorus
A vertical column in the periodic table. Members of a group...
- Aluminium
A vertical column in the periodic table. Members of a group...
- Phosphorus
Silicon is the 14th element in the periodic table and has a symbol of Si and atomic number of 14. It has an atomic weight of 28.085 and a mass number of 28. Silicon has fourteen protons and fourteen neutrons in its nucleus, and fourteen electrons in three shells. It is located in group fourteen, period three and block p of the periodic table.
30 Οκτ 2024 · silicon (Si), a nonmetallic chemical element in the carbon family (Group 14 [IVa] of the periodic table). Silicon makes up 27.7 percent of Earth’s crust; it is the second most abundant element in the crust, being surpassed only by oxygen.
Silicon is a chemical element; it has symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive.
The symbol for silicon is Si with atomic number 14. It has a very high melting and boiling point. At standard conditions silicon also makes a giant covalent structure like other group 14 elements of periodic table do. Chemical Characteristics. At room temperature, pure silicon acts as an insulator. Silicon is a semiconductor at standard ...
Silicon - Properties, history, name origin, facts, applications, isotopes, electronic configuation, crystal structure, hazards and more; Interactive periodic table of the chemical elements.
Silicon is present in the sun and stars and is a principal component of a class of meteorites known as aerolites. Silicon makes up 25.7% of the earth's crust by weight, and is the second most abundant element, exceeded only by oxygen. It is found largely as silicon oxides such as sand (silica), quartz, rock crystal, amethyst, agate, flint ...
