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An algebraic increase in the oxidation number, may correspond to a loss of electrons.

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Lanthanide Contraction

A decrease in the radii of the elements following the lanthanides compared to what would be expected if there were no f-transition metals.

Eluant or eluent

The solvent used in the process of elution, as in liquid chromatography.

 

Manometer

A two-armed barometer.

Octahedral

A term used to describe molecules and polyatomic ions that have one atom in the center and six atoms at the corners of a octahedron.

Liquid Aerosol

Colloidal suspension of liquid in gas.

Tyndall Effect

The scattering of light by colloidal particles.

Boiling Point Elevation

The increase in the boiling point of a solvent caused by the dissolution of a nonvolatile solute.

Chemical Equilibrium

A state of dynamic balance in which the rates of forward and reverse reactions are equal, there is no net change in concentrations of reactants or products while a system is at equilibrium.

Oxide

A binary compound of oxygen.

Wild patina, is it so bad?

Usually this kind of patina appears on monuments. The most striking example is the Statue of Liberty in New York.