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  2. Ion - Wikipedia

    en.wikipedia.org/wiki/Ion

    Ions consisting of only a single atom are termed atomic or monatomic ions, while two or more atoms form molecular ions or polyatomic ions. In the case of physical ionization in a fluid (gas or liquid), "ion pairs" are created by spontaneous molecule collisions, where each generated pair consists of a free electron and a positive ion. [ 5 ]

  3. Ionic bonding - Wikipedia

    en.wikipedia.org/wiki/Ionic_bonding

    When sodium (Na) and chlorine (Cl) are combined, the sodium atoms each lose an electron, forming cations (Na +), and the chlorine atoms each gain an electron to form anions (Cl −). These ions are then attracted to each other in a 1:1 ratio to form sodium chloride (NaCl). Na + Cl → Na + + Cl − → NaCl

  4. Ionization - Wikipedia

    en.wikipedia.org/wiki/Ionization

    Adiabatic ionization is a form of ionization in which an electron is removed from or added to an atom or molecule in its lowest energy state to form an ion in its lowest energy state. [ 16 ] The Townsend discharge is a good example of the creation of positive ions and free electrons due to ion impact.

  5. Ionization energy - Wikipedia

    en.wikipedia.org/wiki/Ionization_energy

    The adiabatic ionization energy of a molecule is the minimum amount of energy required to remove an electron from a neutral molecule, i.e. the difference between the energy of the vibrational ground state of the neutral species (v" = 0 level) and that of the positive ion (v' = 0). The specific equilibrium geometry of each species does not ...

  6. Oxidation state - Wikipedia

    en.wikipedia.org/wiki/Oxidation_state

    Electrochemical oxidation state [7]: 1060 represents a molecule or ion in the Latimer diagram or Frost diagram for its redox-active element. An example is the Latimer diagram for sulfur at pH 0 where the electrochemical oxidation state +2 for sulfur puts HS

  7. Redox - Wikipedia

    en.wikipedia.org/wiki/Redox

    Electron-transfer – Only one (usually) electron flows from the atom, ion, or molecule being oxidized to the atom, ion, or molecule that is reduced. This type of redox reaction is often discussed in terms of redox couples and electrode potentials.

  8. Hydrogen ion - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_ion

    A hydrogen ion is created when a hydrogen atom loses an electron. ... an acid is an ion or molecule that can donate a proton, ... In addition to carbon fluxes, the ...

  9. Degree of ionization - Wikipedia

    en.wikipedia.org/wiki/Degree_of_ionization

    However, the term fully ionized is also used to describe an ion that has no electrons left. [1] Ionization refers to the process whereby an atom or molecule loses one or several electrons from its atomic orbital, or conversely gains an additional one, from an incoming free electron (electron attachment).