The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D). The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope. (Atomic mass is also referred to as atomic weight, but the term 'mass' is more accurate.)
- Silicon Atomic Wt
- Silicon Atomic Weight
- Silicon Atomic Mass
- Atomic No Of Silicon Element
- Atomic No Of Silicon Deficiency
For instance, it can be determined experimentally that neon consists of three isotopes: neon-20 (with 10 protons and 10 neutrons in its nucleus) with a mass of 19.992 amu and an abundance of 90.48%, neon-21 (with 10 protons and 11 neutrons) with a mass of 20.994 amu and an abundance of 0.27%, and neon-22 (with 10 protons and 12 neutrons) with a mass of 21.991 amu and an abundance of 9.25%. The average atomic mass of neon is thus:
| 0.9048 | × | 19.992 amu | = | 18.09 amu |
| 0.0027 | × | 20.994 amu | = | 0.057 amu |
| 0.0925 | × | 21.991 amu | = | 2.03 amu |
| 20.18 amu |
Silicon is a chemical element with atomic number 14 which means there are 14 protons in its nucleus. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs. Name: Silicon Symbol: Si Atomic Number: 14 Atomic Mass: 28.0855 amu Melting Point: 1410.0 °C (1683.15 K, 2570.0 °F) Boiling Point: 2355.0 °C (2628.15 K, 4271.0 °F) Number of Protons/Electrons: 14 Number of Neutrons: 14 Classification: Metalloid Crystal Structure: Cubic Density @ 293 K: 2.329 g/cm 3 Color: grey Atomic Structure. Atomic Number of Silicon. Atomic Number of Silicon is 14. Chemical symbol for Silicon is Si. Number of protons in Silicon is 14. Atomic weight of Silicon is 28.085 u or g/mol. Melting point of Silicon is 1410 °C and its the boiling point is 2355 °C. The atomic number of silicon is 14 i.e. The number of protons in the nucleus of an atom is called atomic number. Silicon atom has 14 electrons (two electrons in first orbit, eight electrons in second orbit and 4 electrons in the outermost orbit). Atomic structure of germanium.
The atomic mass is useful in chemistry when it is paired with the mole concept: the atomic mass of an element, measured in amu, is the same as the mass in grams of one mole of an element. Thus, since the atomic mass of iron is 55.847 amu, one mole of iron atoms would weigh 55.847 grams. The same concept can be extended to ionic compounds and molecules. One formula unit of sodium chloride (NaCl) would weigh 58.44 amu (22.98977 amu for Na + 35.453 amu for Cl), so a mole of sodium chloride would weigh 58.44 grams. One molecule of water (H2O) would weigh 18.02 amu (2×1.00797 amu for H + 15.9994 amu for O), and a mole of water molecules would weigh 18.02 grams.
The original periodic table of the elements published by Dimitri Mendeleev in 1869 arranged the elements that were known at the time in order of increasing atomic weight, since this was prior to the discovery of the nucleus and the interior structure of the atom. The modern periodic table is arranged in order of increasing atomic number instead.
Atomic Number of Silicon is 14.
Chemical symbol for Silicon is Si. Number of protons in Silicon is 14. Atomic weight of Silicon is 28.085 u or g/mol. Melting point of Silicon is 1410 °C and its the boiling point is 2355 °C.
» Boiling Point» Melting Point» Abundant» State at STP» Discovery Year
About Silicon
Silicon is a typical example of metalloid, or the substance which looks like metal but does not have its properties. Its name came from the Latin word for flint, and in its pure form it looks like dark-blue metal. There is abundance of this chemical element on our planet, i.e. we can see it in the form of sand on beaches, or in the forms of various silicates. Silicon is considered to be one of the most useful metals for humanity since its alloys and chemical compounds have a large variety of useful properties. They are used, for example, for producing engines, transformers, various tools, popes, elements of roofs and windows, etc. Pure silicon is used for producing glass. As a very good semi-conductor, silicon is used for producing microelectronics, especially computers, laptops, etc.
Silicon dioxide (SiO 2), silicon's most common compound, is the most abundant compound in the earth's crust. It commonly takes the form of ordinary sand, but also exists as quartz, rock crystal, amethyst, agate, flint, jasper and opal. Silicon dioxide is extensively used in the manufacture of glass and bricks.
Properties of Silicon Element
Silicon Atomic Wt
| Atomic Number (Z) | 14 |
|---|---|
| Atomic Symbol | Si |
| Group | 14 |
| Period | 3 |
| Atomic Weight | 28.085 u |
| Density | 2.3296 g/cm3 |
| Melting Point (K) | 1687 K |
| Melting Point (℃) | 1410 °C |
| Boiling Point (K) | 3538 K |
| Boiling Point (℃) | 2355 °C |
| Heat Capacity | 0.705 J/g · K |
| Abundance | 282000 mg/kg |
| State at STP | Solid |
| Occurrence | Primordial |
| Description | Metalloid |
| Electronegativity (Pauling) χ | 1.9 |
| Ionization Energy (eV) | 8.15169 |
| Atomic Radius | 110pm |
| Covalent Radius | 111pm |
| Van der Waals Radius | 210 |
| Valence Electrons | 4 |
| Year of Discovery | 1824 |
| Discoverer | Berzelius |
What is the Boiling Point of Silicon?
Silicon boiling point is 2355 °C. Boiling point of Silicon in Kelvin is 3538 K.
What is the Melting Point of Silicon?
Silicon melting point is 1410 °C. Melting point of Silicon in Kelvin is 1687 K.
How Abundant is Silicon?
Silicon Atomic Weight
Abundant value of Silicon is 282000 mg/kg.
What is the State of Silicon at Standard Temperature and Pressure (STP)?
State of Silicon is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.
Silicon Atomic Mass
When was Silicon Discovered?
Silicon was discovered in 1824.
Atomic No Of Silicon Element
Atomic No Of Silicon Deficiency