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The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium.
The alkali metals are a group (column) in the periodic table consisting of the chemical elements lithium (Li), sodium (Na), potassium (K),The symbols Na and K for sodium and potassium are derived from their Latin names, natrium and kalium; these are still the names for the elements in some languages, such as German and Russian.
The alkaline earth metals are six chemical elements in group 2 of the periodic table.
Arabic numerals, also called Hindu–Arabic numerals, are the ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, based on the Hindu–Arabic numeral system, the most common system for the symbolic representation of numbers in the world today.
Beryllium is a chemical element with symbol Be and atomic number 4.
A block of the periodic table of elements is a set of adjacent groups.
Boron is a chemical element with symbol B and atomic number 5.
The boron group are the chemical elements in group 13 of the periodic table, comprising boron (B), aluminium (Al), gallium (Ga), indium (In), thallium (Tl), and perhaps also the chemically uncharacterized nihonium (Nh).
Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.
The carbon group is a periodic table group consisting of carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), and flerovium (Fl).
The chalcogens are the chemical elements in group 16 of the periodic table.
Chemical Abstracts Service (CAS) is a division of the American Chemical Society.
A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or Z).
Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds.
Chromium is a chemical element with symbol Cr and atomic number 24.
Cobalt is a chemical element with symbol Co and atomic number 27.
The coinage metals comprise, at a minimum, those metallic chemical elements which have historically been used as components in alloys used to mint coins.
Copper is a chemical element with symbol Cu (from cuprum) and atomic number 29.
Core charge is the effective nuclear charge experienced by an outer shell electron.
In chemistry and atomic physics, an electron shell, or a principal energy level, may be thought of as an orbit followed by electrons around an atom's nucleus.
Fluorine is a chemical element with symbol F and atomic number 9.
Group 10, numbered by current IUPAC style, is the group of chemical elements in the periodic table that consists of nickel (Ni), palladium (Pd), platinum (Pt), and perhaps also the chemically uncharacterized darmstadtium (Ds).
Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), and gold (Au).
Group 12, by modern IUPAC numbering, is a group of chemical elements in the periodic table.
Group 3 is a group of elements in the periodic table.
Group 4 is a group of elements in the periodic table.
Group 5 (by IUPAC style) is a group of elements in the periodic table.
Group 6, numbered by IUPAC style, is a group of elements in the periodic table.
Group 7, numbered by IUPAC nomenclature, is a group of elements in the periodic table.
Group 8 is a group of chemical element in the periodic table.
Group 9, numbered by IUPAC nomenclature, is a group of chemical element in the periodic table.
The halogens are a group in the periodic table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
Helium (from lit) is a chemical element with symbol He and atomic number 2.
The International Union of Pure and Applied Chemistry (IUPAC) is an international federation of National Adhering Organizations that represents chemists in individual countries.
Iron is a chemical element with symbol Fe (from ferrum) and atomic number 26.
This is a list of known oxidation states of the chemical elements, excluding nonintegral values.
Lithium (from lit) is a chemical element with symbol Li and atomic number 3.
In chemistry and atomic physics, the main group is the group of elements whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements.
Manganese is a chemical element with symbol Mn and atomic number 25.
Neon is a chemical element with symbol Ne and atomic number 10.
Nickel is a chemical element with symbol Ni and atomic number 28.
Nitrogen is a chemical element with symbol N and atomic number 7.
The noble gases (historically also the inert gases) make up a group of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity.
A numerical digit is a single symbol (such as "2" or "5") used alone, or in combinations (such as "25"), to represent numbers (such as the number 25) according to some positional numeral systems.
Oxygen is a chemical element with symbol O and atomic number 8.
The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties, whose structure shows periodic trends.
A pnictogen is one of the chemical elements in group 15 of the periodic table.
Pure and Applied Chemistry (abbreviated Pure Appl. Chem.) is the official journal for the International Union of Pure and Applied Chemistry (IUPAC).
A rare-earth element (REE) or rare-earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium.
The numeric system represented by Roman numerals originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages.
Scandium is a chemical element with symbol Sc and atomic number 21.
Titanium is a chemical element with symbol Ti and atomic number 22.
Vanadium is a chemical element with symbol V and atomic number 23.
Zinc is a chemical element with symbol Zn and atomic number 30.
Chemical Series, Chemical Series of the Periodic Table, Chemical series, Element family, Family (Periodic table), Family (periodic table), Group (Periodic table), Periodic table group, Periodic table series.