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Definitions
Term | Definition |
---|---|
Element | An element or chemical element is the simplest form of matter in that it cannot be further broken down using any chemical means. |
Element symbol | A chemical symbol is a 1-3 letter internationally agreed code for a chemical element, usually derived from the name of the element, often in Latin. |
Element name | Element names consist of two parts separated by a period using camel case conventions of 80 characters total or less |
Atomic number | the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table. |
Atomic mass | the mass of an atom of a chemical element expressed in atomic mass units |
average atomic mass | Averge mass of the atom in an element |
isotope | each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei |
mass number | the total number of protons and neutrons in a nucleus. |