Chemical symbols are the abbreviations used in chemistry, mainly for chemical elements; but also for functional groups, chemical compounds, and other entities. Element symbols for chemical elements, also known as atomic symbols, normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised.

化学符号（chemical symbols）是化学中为了表示化学元素、官能团、化合物而使用的缩写；其中，化学元素的元素符号（element symbols），则通常由一个或两个拉丁字母组成，且首字母大写。

It is a tabular arrangement of the elements by their chemical properties that usually uses abbreviated chemical symbols in place of full element names, but the linear list format presented here is also useful.

化學符號（chemical symbols）是化學中為了表示化學元素、官能團、化合物而使用的縮寫；其中，化學元素的元素符號（element symbols），則通常由一個或兩個拉丁字母組成，且首字母大寫。

This is a list of elements by atomic number with symbol. List of elements Atomic Number Name Symbol Group Period Number 1 Hydrogen H 1 1 2 Helium He 18 1 3 Lithium Li 1 2 4 Beryllium Be 2 2 ... Chemical sym Name Origin of symbol Atomic No. Atomic mass Density (near r.t.) Melting point Boiling point Year of discovery Discoverer; Ac: Actinium: 89 ...

A chemical symbol is the shortform of the name of an element. Usually, it is made up of one or two letters, but sometimes it is made up of three letters. For example, the chemical symbol for oxygen is O. The chemical symbol for calcium is Ca. Before it is discovered and scientists decided what it would be called, the chemical symbol for ...

Quantities, Units and Symbols in Physical Chemistry, also known as the Green Book, is a compilation of terms and symbols widely used in the field of physical chemistry. It also includes a table of physical constants , tables listing the properties of elementary particles , chemical elements , and nuclides , and information about conversion ...

The various chemical elements are formally identified by their unique atomic numbers, their accepted names, and their chemical symbols. Atomic numbers The known elements have atomic numbers from 1 to 118, conventionally presented as Arabic numerals .

A chemical formula is a way that chemists describe a molecule. The formula says what atoms, and how many of each type, are in the molecule. Sometimes the formula shows how the atoms are linked, and sometimes the formula shows how the atoms are arranged in space. The letter shows what chemical element each atom is.

Chemical symbols of elements almost always come from their English or Latin names. For example, carbon has the chemical symbol 'C', and sodium has chemical symbol 'Na', after the Latin natrium. Tungsten is called 'W' after its German name, wolfram. [3] [5] 'Au' is the symbol for gold and it comes from the Latin word for gold, aurum. [2] [6 ...