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Index Electronegativity

Electronegativity, symbol ''χ'', is a chemical property that describes the tendency of an atom to attract a shared pair of electrons (or electron density) towards itself. [1]

101 relations: Acid dissociation constant, Acidic oxide, Alkali metal, Aluminium, Amedeo Avogadro, Amphoterism, Arithmetic mean, Atom, Atomic nucleus, Atomic number, Atomic orbital, Basic oxide, Bismuth, Bond-dissociation energy, Bromine, Caesium, Caesium fluoride, Calculation, Chemical compound, Chemical element, Chemical polarity, Chemical potential, Chemical property, Chi (letter), Chloric acid, Chlorine, Chlorous acid, Chromium trioxide, Chromium(III) oxide, Covalent bond, Covalent radius, D-block contraction, Dimensionless quantity, Effective nuclear charge, Electron, Electron affinity, Electron density, Electron shell, Electronegativities of the elements (data page), Electronvolt, Encarta, Eugene G. Rochow, Fluorine, Francium, Free-energy relationship, Gallium, Geometric mean, Germanium, Group (periodic table), Hammett equation, ..., Helium, Heteronuclear molecule, Hydrogen, Hydrogen bromide, Hypochlorous acid, Inductive effect, Infrared spectroscopy, Ion, Ionization energy, Jöns Jacob Berzelius, Joule per mole, Journal of Chemical Education, Journal of Chemical Physics, Journal of the American Chemical Society, Lead, Linus Pauling, Manganese heptoxide, Manganese(III) oxide, Mössbauer spectroscopy, McGraw-Hill Education, Melting point, Metal, Molecule, Neon, Noble gas, Nuclear magnetic resonance, Nuclear magnetic resonance spectroscopy, Organophosphorus compound, Oxidation state, Oxyacid, Oxygen, Perchloric acid, Period (periodic table), Period 4 element, Periodic table, Periodic trends, Picometre, Proceedings of the USSR Academy of Sciences, Proton, Relativistic quantum chemistry, Resonance (chemistry), Robert S. Mulliken, Robert Thomas Sanderson, Shielding effect, Silicon, Slater's rules, Spectroscopy, Thallium, Transferability (chemistry), Valence bond theory, Valence electron. Expand index (51 more) »

Acid dissociation constant

An acid dissociation constant, Ka, (also known as acidity constant, or acid-ionization constant) is a quantitative measure of the strength of an acid in solution.

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Acidic oxide

Acidic oxides, or acid anhydrides, are oxides that react with water to form an acid, or with a base to form a salt.

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Alkali metal

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.

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Aluminium or aluminum is a chemical element with symbol Al and atomic number 13.

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Amedeo Avogadro

Amedeo Carlo Avogadro, Count of Quaregna and Cerreto (9 August 17769 July 1856), was an Italian scientist, most noted for his contribution to molecular theory now known as Avogadro's law, which states that equal volumes of gases under the same conditions of temperature and pressure will contain equal numbers of molecules.

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In chemistry, an amphoteric compound is a molecule or ion that can react both as an acid as well as a base.

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Arithmetic mean

In mathematics and statistics, the arithmetic mean (stress on third syllable of "arithmetic"), or simply the mean or average when the context is clear, is the sum of a collection of numbers divided by the number of numbers in the collection.

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An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.

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Atomic nucleus

The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.

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Atomic number

The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of an atom.

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Atomic orbital

In quantum mechanics, an atomic orbital is a mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom.

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Basic oxide

A basic oxide is an oxide that shows basic properties in opposition to acidic oxides and that either.

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Bismuth is a chemical element with symbol Bi and atomic number 83.

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Bond-dissociation energy

Bond-dissociation energy (BDE or D0) is one measure of the strength of a chemical bond.

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Bromine is a chemical element with symbol Br and atomic number 35.

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Caesium (British spelling and IUPAC spelling) or cesium (American spelling) is a chemical element with symbol Cs and atomic number 55.

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Caesium fluoride

Caesium fluoride or cesium fluoride is an inorganic compound usually encountered as a hygroscopic white solid.

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A calculation is a deliberate process that transforms one or more inputs into one or more results, with variable change.

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Chemical compound

A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) composed of atoms from more than one element held together by chemical bonds.

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Chemical element

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).

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Chemical polarity

In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole or multipole moment.

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Chemical potential

In thermodynamics, chemical potential of a species is a form of energy that can be absorbed or released during a chemical reaction or phase transition due to a change of the particle number of the given species.

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Chemical property

A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.

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Chi (letter)

Chi (uppercase Χ, lowercase χ; χῖ) is the 22nd letter of the Greek alphabet, pronounced or in English.

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Chloric acid

Chloric acid, HClO3, is an oxoacid of chlorine, and the formal precursor of chlorate salts.

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Chlorine is a chemical element with symbol Cl and atomic number 17.

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Chlorous acid

Chlorous acid is an inorganic compound with the formula HClO2.

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Chromium trioxide

Chromium trioxide is an inorganic compound with the formula CrO3.

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Chromium(III) oxide

Chromium(III) oxide (or chromia) is the inorganic compound of the formula.

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Covalent bond

A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.

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Covalent radius

The covalent radius, rcov, is a measure of the size of an atom that forms part of one covalent bond.

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D-block contraction

The d-block contraction (sometimes called scandide contraction) is a term used in chemistry to describe the effect of having full d orbitals on the period 4 elements.

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Dimensionless quantity

In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is assigned.

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Effective nuclear charge

The effective nuclear charge (often symbolized as Z_ or Z^\ast) is the net positive charge experienced by an electron in a polyelectronic atom.

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The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.

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Electron affinity

In chemistry and atomic physics, the electron affinity (Eea) of an atom or molecule is defined as the amount of energy released or spent when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.

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Electron density

Electron density is the measure of the probability of an electron being present at a specific location.

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Electron shell

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.

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Electronegativities of the elements (data page)

No description.

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In physics, the electronvolt (symbol eV, also written electron-volt and electron volt) is a unit of energy equal to approximately joules (symbol J).

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Microsoft Encarta was a digital multimedia encyclopedia published by Microsoft Corporation from 1993 to 2009.

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Eugene G. Rochow

Eugene George Rochow (October 4, 1909 – March 21, 2002) was an American inorganic chemist.

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Fluorine is a chemical element with symbol F and atomic number 9.

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Francium is a chemical element with symbol Fr and atomic number 87.

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Free-energy relationship

In physical organic chemistry, a free-energy relationship or Gibbs energy relation relates the logarithm of a reaction rate constant or equilibrium constant for one series of reactions with the logarithm of the rate or equilibrium constant for a related series of reactions.

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Gallium is a chemical element with symbol Ga and atomic number 31.

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Geometric mean

In mathematics, the geometric mean is a mean or average, which indicates the central tendency or typical value of a set of numbers by using the product of their values (as opposed to the arithmetic mean which uses their sum).

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Germanium is a chemical element with symbol Ge and atomic number 32.

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Group (periodic table)

In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements.

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Hammett equation

The Hammett equation in organic chemistry describes a linear free-energy relationship relating reaction rates and equilibrium constants for many reactions involving benzoic acid derivatives with meta- and para-substituents to each other with just two parameters: a substituent constant and a reaction constant.

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Helium (from lit) is a chemical element with symbol He and atomic number 2.

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Heteronuclear molecule

Heteronuclear molecules, or heteronuclear species, are molecules composed of more than one type of element, for example, HCl.

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Hydrogen is a chemical element with symbol H and atomic number 1.

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Hydrogen bromide

Hydrogen bromide is the diatomic molecule with the formula.

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Hypochlorous acid

Hypochlorous acid (HClO) is a weak acid that forms when chlorine dissolves in water, and itself partially dissociates, forming ClO-.

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Inductive effect

In chemistry and physics, the inductive effect is an experimentally observed effect of the transmission of charge through a chain of atoms in a molecule, resulting in a permanent dipole in a bond.

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Infrared spectroscopy

Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) involves the interaction of infrared radiation with matter.

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An ion is an atom or molecule that has a non-zero net electrical charge (its total number of electrons is not equal to its total number of protons).

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Ionization energy

The ionization energy (Ei) is qualitatively defined as the amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated gaseous atom to form a cation.

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Jöns Jacob Berzelius

Baron Jöns Jacob Berzelius (20 August 1779 – 7 August 1848), named by himself and contemporary society as Jacob Berzelius, was a Swedish chemist.

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Joule per mole

The joule per mole (symbol: J·mole−1 or J/mol) is an SI derived unit of energy per amount of material.

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Journal of Chemical Education

The Journal of Chemical Education is a monthly peer-reviewed academic journal available in both print and electronic versions.

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Journal of Chemical Physics

The Journal of Chemical Physics is a scientific journal published by the American Institute of Physics that carries research papers on chemical physics.

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Journal of the American Chemical Society

The Journal of the American Chemical Society (also known as JACS) is a weekly peer-reviewed scientific journal that was established in 1879 by the American Chemical Society.

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Lead is a chemical element with symbol Pb (from the Latin plumbum) and atomic number 82.

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Linus Pauling

Linus Carl Pauling (February 28, 1901 – August 19, 1994) was an American chemist, biochemist, peace activist, author, educator, and husband of American human rights activist Ava Helen Pauling.

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Manganese heptoxide

Manganese(VII) oxide (manganese heptoxide) is an inorganic compound with the formula Mn2O7.

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Manganese(III) oxide

Manganese(III) oxide is a chemical compound with the formula Mn2O3.

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Mössbauer spectroscopy

Mössbauer spectroscopy is a spectroscopic technique based on the Mössbauer effect.

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McGraw-Hill Education

McGraw-Hill Education (MHE) is a learning science company and one of the "big three" educational publishers that provides customized educational content, software, and services for pre-K through postgraduate education.

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Melting point

The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid at atmospheric pressure.

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A metal (from Greek μέταλλον métallon, "mine, quarry, metal") is a material (an element, compound, or alloy) that is typically hard when in solid state, opaque, shiny, and has good electrical and thermal conductivity.

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A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

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Neon is a chemical element with symbol Ne and atomic number 10.

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Noble gas

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.

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Nuclear magnetic resonance

Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a magnetic field absorb and re-emit electromagnetic radiation.

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Nuclear magnetic resonance spectroscopy

Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy (MRS), is a spectroscopic technique to observe local magnetic fields around atomic nuclei.

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Organophosphorus compound

Organophosphorus compounds are organic compounds containing phosphorus.

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Oxidation state

The oxidation state, sometimes referred to as oxidation number, describes degree of oxidation (loss of electrons) of an atom in a chemical compound.

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An oxyacid, or oxoacid, is an acid that contains oxygen.

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Oxygen is a chemical element with symbol O and atomic number 8.

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Perchloric acid

Perchloric acid is a mineral acid with the formula HClO4.

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Period (periodic table)

A period in the periodic table is a horizontal row.

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Period 4 element

A period 4 element is one of the chemical elements in the fourth row (or period) of the periodic table of the elements.

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Periodic table

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.

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Periodic trends

Periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its radius and its electronic properties.

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The picometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: pm) or picometer (American spelling) is a unit of length in the metric system, equal to, or one trillionth of a metre, which is the SI base unit of length.

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Proceedings of the USSR Academy of Sciences

The Proceedings of the USSR Academy of Sciences (Доклады Академии Наук СССР, Doklady Akademii Nauk SSSR (DAN SSSR), Comptes Rendus de l'Académie des Sciences de l'URSS) was a Soviet journal that was dedicated to publishing original, academic research papers in physics, mathematics, chemistry, geology, and biology.

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| magnetic_moment.

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Relativistic quantum chemistry

Relativistic quantum chemistry combines relativistic mechanics with quantum chemistry to explain elemental properties and structure, especially for the heavier elements of the periodic table.

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Resonance (chemistry)

In chemistry, resonance or mesomerism is a way of describing delocalized electrons within certain molecules or polyatomic ions where the bonding cannot be expressed by one single Lewis structure.

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Robert S. Mulliken

Robert Sanderson Mulliken (June 7, 1896 – October 31, 1986) was an American physicist and chemist, primarily responsible for the early development of molecular orbital theory, i.e. the elaboration of the molecular orbital method of computing the structure of molecules.

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Robert Thomas Sanderson

Robert Thomas Sanderson (1912–1989) was an American inorganic chemist, more commonly known by the initials "R.T." found in his papers.

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Shielding effect

The shielding effect describes the attraction between an electron and the nucleus in any atom with more than one electron.

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Silicon is a chemical element with symbol Si and atomic number 14.

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Slater's rules

In quantum chemistry, Slater's rules provide numerical values for the effective nuclear charge concept.

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Spectroscopy is the study of the interaction between matter and electromagnetic radiation.

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Thallium is a chemical element with symbol Tl and atomic number 81.

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Transferability (chemistry)

Transferability, in chemistry, is the assumption that a chemical property that is associated with an atom or a functional group in a molecule will have a similar (but not identical) value in a variety of different circumstances.

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Valence bond theory

In chemistry, valence bond (VB) theory is one of two basic theories, along with molecular orbital (MO) theory, that were developed to use the methods of quantum mechanics to explain chemical bonding.

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Valence electron

In chemistry, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.

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[1] https://en.wikipedia.org/wiki/Electronegativity

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