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Gallium is a chemical element; it has the symbol Ga and atomic number 31. ... Gallium has 30 known isotopes, ranging in mass number from 60 to 89. Only two isotopes ...
118 chemical elements have been identified and named officially by IUPAC.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).
The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups"). It is an icon of chemistry and is widely used in physics and other sciences.
Gallium is a chemical element with symbol Ga and atomic number 31. Gallium may also refer to: Gallium experiment, a neutrino detection experiment also known as GALLEX; Gallium scan or gallium imaging, a method for the detection of infections and cancers; Gallium3D, a software library for 3D graphics acceleration
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.
Similarly, the name helium is derived from the Greek word for the Sun (Ἢλιος, Helios), as the first evidence for helium came in the form of distinctive emission lines from the Sun that were not explainable by any of the known elements in the 1870s. [37] Tellurium is named after the Latin word tellus, meaning "earth".
A FBI document obtained by Wikileaks details the symbols and logos used by pedophiles to identify sexual preferences. According to the document members of pedophilic organizations use of ...
A chemical element is a chemical substance whose atoms all have the same number of protons.The number of protons is called the atomic number of that element. For example, oxygen has an atomic number of 8, meaning each oxygen atom has 8 protons in its nucleus.