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  2. Diatomic molecule - Wikipedia

    en.wikipedia.org/wiki/Diatomic_molecule

    The molecular term symbol is a shorthand expression of the angular momenta that characterize the electronic quantum states of a diatomic molecule, which are also eigenstates of the electronic molecular Hamiltonian. It is also convenient, and common, to represent a diatomic molecule as two-point masses connected by a massless spring.

  3. Lists of molecules - Wikipedia

    en.wikipedia.org/wiki/Lists_of_molecules

    The following is an index of list of molecules organized by time of discovery of their molecular formula or their specific molecule in case of isomers: List of compounds By number of carbon atoms in the molecule

  4. Category:Diatomic molecules - Wikipedia

    en.wikipedia.org/wiki/Category:Diatomic_molecules

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us

  5. List of interstellar and circumstellar molecules - Wikipedia

    en.wikipedia.org/wiki/List_of_interstellar_and...

    The following tables list molecules that have been detected in the interstellar medium or circumstellar matter, grouped by the number of component atoms. Neutral molecules and their molecular ions are listed in separate columns; if there is no entry in the molecule column, only the ionized form has been detected. Designations (names of ...

  6. Atomicity (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Atomicity_(chemistry)

    Atomicity is the total number of atoms present in a molecule of an element. For example, each molecule of oxygen (O 2) is composed of two oxygen atoms. Therefore, the atomicity of oxygen is 2. [1] In older contexts, atomicity is sometimes equivalent to valency. Some authors also use the term to refer to the maximum number of valencies observed ...

  7. Molecular term symbol - Wikipedia

    en.wikipedia.org/wiki/Molecular_term_symbol

    In 1928 Eugene Wigner and E.E. Witmer proposed rules to determine the possible term symbols for diatomic molecular states formed by the combination of a pair of atomic states with given atomic term symbols. [4] [5] [6] For example, two like atoms in identical 3 S states can form a diatomic molecule in 1 Σ g +, 3 Σ u +, or 5 Σ g + states.

  8. Molecular orbital diagram - Wikipedia

    en.wikipedia.org/wiki/Molecular_orbital_diagram

    The LCAO-MO method is used in conjunction to further describe the state of the molecule. [13] Diatomic molecules consist of a bond between only two atoms. They can be broken into two categories: homonuclear and heteronuclear. A homonuclear diatomic molecule is one composed of two atoms of the same element. Examples are H 2, O 2, and N 2. A ...

  9. Molecule - Wikipedia

    en.wikipedia.org/wiki/Molecule

    The smallest molecule is the diatomic hydrogen (H 2), with a bond length of 0.74 Å. [24] Effective molecular radius is the size a molecule displays in solution. [25] [26] The table of permselectivity for different substances contains examples.