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Zinc is a chemical element with the symbol Zn and atomic number 30. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table.
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
This is a list of chemical elements and their atomic properties, ... a purely formal definition as number of electrons in the outermost ... 30.973762(2) 2.19: 10.48669:
Each distinct atomic number therefore corresponds to a class of atom: these classes are called the chemical elements. [5] The chemical elements are what the periodic table classifies and organizes. Hydrogen is the element with atomic number 1; helium, atomic number 2; lithium, atomic number 3; and so on.
Atomicity is the total number of atoms present in a molecule of an element. For example, each molecule of oxygen (O 2) is composed of two oxygen atoms. Therefore, the atomicity of oxygen is 2. [1] In older contexts, atomicity is sometimes equivalent to valency. Some authors also use the term to refer to the maximum number of valencies observed ...
Wikipedia: WikiProject Elements/Isotope tables/Element 21-30. Add languages. Add links. Project page; Talk; English. Read; ... 30 Zinc: List: 52 Zn 53 Zn 54 Zn 55 Zn ...
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Phosphorus 15 P 30.974: ... The following sortable table shows the 118 known elements. Atomic number, Element, and Symbol all serve independently as unique identifiers.