Abbreviation of Input-Output.
In the halogen group of elements.
Iodine Number
The number of grams of iodine required to saturate 100 grams of fat.
An atom, or group of atoms, which has either gained or lost electrons.
Ion Acoustic Wave
A longitudinal compression wave in the ion density of a plasma.
Ion Dipole Forces
Intermolecular force that exist between charged particles and partially charged molecules.
Ion Exchange
An exchange of ions between two electrolytes or between an electrolyte solution and a complex.
Ion Exchange Resin
A method of separating ions from a solution by reversibly binding them onto a resin that has charged sites on its surface.
Ion Laser
A type of laser employing a very high discharge current, passing down a small bore to ionize a noble gas such as argon or krypton.
Ion Trap
A device that allows ions to be trapped for long periods of time, during which the ions can be interrogated and their state changes observed.
Ionic Bond
This describes the electrostatic attraction of two oppositely charged ions in a crystalline lattice.
Ionic Compound
A compound made of distinguishable cations and anions, held together by electrostatic forces.
Ionic Conductor
A material that conducts electricity with ions as charge carriers.
Ionic Current
Electrical current with ions as charge carriers.
Ionic Dissociation
When ionic substances dissolve, their ions are surrounded by solvent molecules and separated from each other.
Ionic Liquid
A liquid containing mostly ions, a molten salt in which the molecules are fully dissociated.
Ionic Mobility
A quantitative measure of the ability of an ion to move under the influence of a potential difference in solution.
Ionic Radius
The radii of anions and cations in crystalline ionic compounds, as determined by consistently partitioning the centre-to-centre distance of ions in those compounds.
Ionic Strength
A measure of strength of a solution based on both the concentrations and valences of the ions present.
The process of producing ions.
Ionization Energy
Energy required to remove an electron from a specific atom.
Ionization Gauge
The gas molecules are ionized and the number and type of ions produced measured and related to the pressure of the gas.
Ionization Point
The potential required to ionize the gas of a gas-filled tube.
To make an atom or molecule of an element lose an electron, as by X-ray bombardment, and thus be converted into a positive ion.
Ionizing Radiation
A particle or a photon with enough energy to knock off an electron from an atom.
The region of the Earth's upper atmosphere containing a small percentage of free electrons and ions produced by photo ionization.
Ionospheric Storms
Disturbances in the earth′s magnetic field that make communications practical only at lower frequencies.
A letter of the Greek alphabet.