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A rare trivalent metallic element, found in gadolinite and other minerals. Symbol: Y, at. wt.: 88.905, at. no.: 39, sp. gr.: 4.47. Cf."rare-earth element."

Yttrium has a silver-metallic luster and is relatively stable in air unless finely divided. Turnings of the metal, however, ignite in air if their temperature exceeds 400oC. Yttrium oxide is one of the most important compounds of yttrium and accounts for the largest use. It is widely used in making YVO4 europium, and Y2O3 europium phosphors to give the red color in color television tubes.

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Specific Gravity

The ratio of the density of a substance to the density of water.

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.

Colligative Properties

Physical properties of solutions that depend upon the number but not the kind of solute particles present.

All Chemicals - Chemical Glossary

The Chemical Glossary currently has 651 chemical entries. You may search the Chemical Glossary by entering the keyword in the search box or by browsing the entire chemical glossary by letter in alphabetical order.

Weak Field Ligand

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

xylan

The pentosan occurring in woody tissue that hydrolyzes to xylose: used as a source of furfural.

Activity Series

A listing of metals (and hydrogen) in order of decreasing activity.

Basic Salt

A salt containing an ionizable OH group.

Energy

The capacity to do work or transfer heat.

Reversible Reaction

Reactions that do not go to completion and occur in both the forward and reverse direction.