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Refers to the overall processes by which metals are extracted from ores.

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ytterbium

A rare metallic element found in gadolinite and forming compounds resembling those of yttrium. Symbol: Yb, at. wt.: 173.04, at. no.: 70, sp. gr.: 6.96. Cf."rare-earth element."

 

Osmotic Pressure

The hydrostatic pressure produced on the surface of a semipermable membrane by osmosis.

Fluorescence

Absorption of high energy radiation by a substance and subsequent emission of visible light.

Metallic Conduction

Conduction of electrical current through a metal or along a metallic surface.

Stereoisomers

Isomers that differ only in the way that atoms are oriented in space, consist of geometrical and optical isomers.

 

Boiling Point

The temperature at which the vapor pressure of a liquid is equal to the applied pressure, also the condensation point

Aldehyde

Compound in which an alkyl or aryl group and a hydrogen atom are attached to a carbonyl group and a hydrogen atom are attached to a carbonyl group, general formula, O-R-C-H

 

Rate-determining Step

The slowest step in a mechanism, the step that determines the overall rate of reaction.

Coordination Isomers

Isomers involving exchanges of ligands between complex cation and complex anion of the same compound.

Nucleus

The very small, very dense, positively charged center of an atom containing protons and neutrons, as well as other subatomic particles.