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Specific distribution of electrons in atomic orbitals of atoms or ions.

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Hydrogen-Oxygen Fuel Cell

Fuel cell in which hydrogen is the fuel (reducing agent) and oxygen is the oxidizing agent.

 

Ternary Compound

A compound consisting of three elements, may be ionic or covalent.

Emulsion

Colloidal suspension of a liquid in a liquid.

Hess' Law of Heat Summation

The enthalpy change for a reaction is the same whether it occurs in one step or a series of steps.

S Orbital

A spherically symmetrical atomic orbital, one per energy level.

Radical

An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)

Eutrophication

The undesirable overgrowth of vegetation caused by high concentrates of plant nutrients in bodies of water.

Electronegativity

A measure of the relative tendency of an atom to attract electrons to itself when chemically combined with another atom.

Carbanion

An organic ion carrying a negative charge on a carbon atom.

Dissociation Constant

Equilibrium constant that applies to the dissociation of a comples ion into a simple ion and coordinating species (ligands).