Sodium and chlorine bonding ionically to form sodium chloride. Sodium loses its outer electron to give it a noble gas electron configuration, and this electron enters the chlorine atom exothermically. History Noble gas is translated from the German noun de ''Edelgas'' first used in 1898 by Hugo Erdmann to indicate their extremely low level of reactivity The oppositely charged ions are then attracted to each other, and their bonding releases energy. The net transfer of energy is that energy leaves the atoms, so the reaction is able to take place.

An ionic bond (or electrovalent bond) is a type of chemical bond that can often form between metal and non-metal ions (or polyatomic ions such as ammonium) through electrostatic attraction. A chemical bond is the physical process responsible for the attractive interactions between Atoms and Molecules and which confers stability to diatomic and polyatomic The M acro E xpansion T emplate A ttribute L anguage complements TAL, providing macros which allow the reuse of code across Nonmetal is a term used in Chemistry when classifying the Chemical elements On the basis of their general physical and chemical properties every element in the An ion is an Atom or Molecule which has lost or gained one or more Valence electrons giving it a positive or negative electrical charge A polyatomic ion is a charged species ( Ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered as acting Ammonium is also an old name for the Siwa Oasis in western Egypt. Electrostatics is the branch of Science that deals with the Phenomena arising from what seems to be stationary Electric charges Since Classical In short, it is a bond formed by the attraction between two oppositely charged ions.

The metal donates one or more electrons, forming a positively charged ion or cation with a stable electron configuration. The electron is a fundamental Subatomic particle that was identified and assigned the negative charge in 1897 by J An ion is an Atom or Molecule which has lost or gained one or more Valence electrons giving it a positive or negative electrical charge In Atomic physics and Quantum chemistry, electron configuration is the arrangement of Electrons in an Atom, Molecule, or other These electrons then enter the non metal, causing it to form a negatively charged ion or anion which also has a stable electron configuration. An ion is an Atom or Molecule which has lost or gained one or more Valence electrons giving it a positive or negative electrical charge The electrostatic attraction between the oppositely charged ions causes them to come together and form a bond.

For example, common table salt is sodium chloride. Salt is a Dietary mineral composed primarily of Sodium chloride that is essential for Animal life but toxic to most land plants For sodium chloride in the diet see Salt. Sodium chloride, also known as common salt, table salt, or Halite, is a When sodium (Na) and chlorine (Cl) are combined, the sodium atoms each lose an electron, forming a cation (Na⁺), and the chlorine atoms each gain an electron to form an anion (Cl^-). Sodium (ˈsoʊdiəm is an element which has the symbol Na( Latin natrium, from Arabic natrun) atomic number 11 atomic mass 22 Chlorine (ˈklɔriːn from the Greek word 'χλωρóς' ( khlôros, meaning 'pale green' is the Chemical element with Atomic number 17 and These ions are then attracted to each other in a 1:1 ratio to form sodium chloride (NaCl).

Na + Cl → Na⁺ + Cl^- → NaCl

Electron configurations of lithium and fluorine. In Atomic physics and Quantum chemistry, electron configuration is the arrangement of Electrons in an Atom, Molecule, or other Lithium (ˈlɪθiəm is a Chemical element with the symbol Li and Atomic number 3 Fluorine, fluorum meaning "to flow" is the Chemical element with the symbol F and Atomic number 9 Lithium has one electron in its outer shell, held rather loosely because the ionization energy is low. The ionization potential, ionization energy or EI of an Atom or Molecule is the Energy required to remove an Electron Fluorine carries 7 electrons in its outer shell. When one electron moves from lithium to fluorine, each ion acquires the noble gas configuration. An ion is an Atom or Molecule which has lost or gained one or more Valence electrons giving it a positive or negative electrical charge History Noble gas is translated from the German noun de ''Edelgas'' first used in 1898 by Hugo Erdmann to indicate their extremely low level of reactivity The bonding energy from the electrostatic attraction of the two oppositely-charged ions has a large enough negative value that the overall bonded state energy is lower than the unbonded state

The removal of electrons from the atoms is endothermic and causes the ions to have a higher energy. ---- Bold text Coulomb's law', developed in the 1780s by French physicist Charles Augustin de Coulomb, may be stated in scalar form There may also be energy changes associated with breaking of existing bonds or the addition of more than one electron to form anions. However, the attraction of the ions to each other lowers their energy.

Ionic bonding will occur only if the overall energy change for the reaction is favourable – when the bonded atoms have a lower energy than the free ones. The larger the resulting energy change the stronger the bond. The low electronegativity of metals and high electronegativity of non-metals means that the energy change of the reaction is most favorable when metals lose electrons and non-metals gain electrons. " Electronegativity " is the opposite of " Electropositivity," which describes an element's ability to donate electrons

Pure ionic bonding is not known to exist. All ionic bonds have a degree of covalent bonding or metallic bonding. Although the term metallic bond is often used in contrast to the term Covalent bond it is better to speak of metallic bonding, because this type of bonding is The larger the difference in electronegativity between two atoms, the more ionic the bond. " Electronegativity " is the opposite of " Electropositivity," which describes an element's ability to donate electrons Ionic compounds conduct electricity when molten or in solution. They generally have a high melting point and tend to be soluble in water. The melting point of a solid is the temperature range at which it changes state from solid to Liquid.

Polarization effects

Ions in crystal lattices of purely ionic compounds are spherical; however, if the positive ion is small and/or highly charged, it will distort the electron cloud of the negative ion. An ion is an Atom or Molecule which has lost or gained one or more Valence electrons giving it a positive or negative electrical charge In Mineralogy and Crystallography, a crystal structure is a unique arrangement of Atoms in a Crystal. "Globose" redirects here See also Globose nucleus. A sphere (from Greek σφαίρα - sphaira, "globe This polarization of the negative ion leads to a build-up of extra charge density between the two nuclei, i. In Classical electromagnetism, the polarization density (or electric polarization, or simply polarization) is the Vector field that expresses The nucleus of an Atom is the very dense region consisting of Nucleons ( Protons and Neutrons, at the center of an atom e. , to partial covalency. Larger negative ions are more easily polarized, but the effect is usually only important when positive ions with charges of 3+ (e. Electric charge is a fundamental conserved property of some Subatomic particles which determines their Electromagnetic interaction. g. , Al³⁺) are involved (e. g. , pure AlCl₃ is a covalent molecule). However, 2+ ions (Be²⁺) or even 1+ (Li⁺) show some polarizing power because their sizes are so small (e. g. , LiI is ionic but has some covalent bonding present).

Ionic structure

Ionic compounds in the solid state form a continuous ionic lattice structure in an ionic crystal. In Chemistry, an ionic compound is a Chemical compound in which Ions are held together in a lattice structure by Ionic bonds Usually the positively An ionic crystal is a Crystal consisting of Ions bound together by their Electrostatic attraction The simplest form of ionic crystal is a simple cubic. This is as if all the atoms were placed at the corners of a cube. This unit cell has a weight that is the same as 1 of the atoms involved. In Mineralogy and Crystallography, a crystal structure is a unique arrangement of Atoms in a Crystal. When all the ions are approximately the same size, they can form a different structure called a face-centered cubic (where the weight is 4 * atomic weight), but, when the ions are different sizes, the structure is often body-centered cubic (2 times the weight). The cubic crystal system (or isometric) is a Crystal system where the Unit cell is in the shape of a Cube. The cubic crystal system (or isometric) is a Crystal system where the Unit cell is in the shape of a Cube. In ionic lattices the coordination number refers to the number of connected ions. The coordination number of an atom in a molecule or a crystal is the number of its nearest neighbours

Ionic versus covalent bonds

In an ionic bond, the atoms are bound by attraction of opposite ions, whereas, in a covalent bond, atoms are bound by sharing electrons. In covalent bonding, the molecular geometry around each atom is determined by VSEPR rules, whereas, in ionic materials, the geometry follows maximum packing rules. Molecular geometry or molecular structure is the three- Dimensional arrangement of the Atoms that constitute a Molecule. Valence shell electron pair repulsion (VSEPR theory (1957 is a model in Chemistry, which is used for predicting the shapes of individual Molecules based

Electrical conductivity

Main article: Electrolyte

Ionic substances in solution conduct electricity because the ions are free to move and carry the electrical charge from the anode to the cathode. An electrolyte is any substance containing free Ions that behaves as an electrically conductive medium Ionic substances conduct electricity when molten because atoms (and thus the electrons) are mobilised. Electrons can flow directly through the ionic substance in a molten state.

Substances in ionic form

See also

• Coulomb's law
• Linear combination of atomic orbitals
• Hybridisation
• Chemical polarity

External links

• Ionic bonding tutorial
• Video on ionic bonding