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

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    Most of the microscopes used today are compound. A compound microscope features two or more lenses. A hollow cylinder called the tube connects the two lenses. The top lens, the one people look through, is called the eyepiece. The bottom lens is known as the objective lens. Below the two lenses is...



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Boron Hydrides

Binary compounds of boron and hydrogen.

Electrode Potentials

Potentials, E, of half-reactions as reductions versus the standard hydrogen electrode.

Intermolecular Forces

Forces between individual particles (atoms, molecules, ions) of a substance.

Alkaline Earth Metals

Group IIA metals

Graham's Law

The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.

Eutrophication

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

Weak Field Ligand

A Ligand that exerts a weak crystal or ligand field and ge- nerally forms high spin complexes with metals.

Fractional Precipitation

Removal of some ions from solution by precipitation while leaving other ions with similar properties in solution.

Effective Molality

The sum of the molalities of all solute particles in a solution.

Aufbau ('building up') Principle

Describes the order in which electrons fill orbitals in atoms.