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The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.

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Alpha Particles

A helium nucleus.

Diamagnetism

Weak repulsion by a magnetic field.

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.

Saponification

Hydrolysis of esters in the presence of strong soluable bases.

Effective Nuclear Charge

The nuclear charge experienced by the outermost electrons of an atom, the actual nuclear charge minus the effects of shielding due to inner-shell electrons.
Example: Set of dx2-y2 and dz2 orbitals, those d orbitals within a set with lobes directed along the x-, y-, and z-axes.

Daughter Nuclide

Nuclide that is produced in a nuclear decay.

 

Molecular Orbital

An orbit resulting from overlap and mixing of atomic orbitals on different atoms. An MO belongs to the molecule as a whole.

Percent Purity

The percent of a specified compound or element in an impure sample.

Electromotive Series

The relative order of tendencies for elements and their simple ions to act as oxidizing or reducing agents, also called the activity series.

K Capture

Absorption of a K shell (n=1) electron by a proton as it is converted to a neutron.