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A colorless, crystalline compound, XeF6, that melts at 50°C to a yellow liquid, and boils at 75°C.

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Corrosion

Oxidation of metals in the presence of air and moisture.

Reaction Quotient

The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.

Cell Potential

Potential difference, Ecell, between oxidation and reduction half-cells under nonstandard conditions.

 

Matter

Anything that has mass and occupies space.

Lanthanides

Elements 58 to 71 (after lanthanum).

Shielding Effect

Electrons in filled sets of s , p orbitals between the nucleus and outer shell electrons shield the outer shell electrons somewhat from the effect of protons in the nucleus, also called screening effect.

Kinetic Energy

Energy that matter processes by virtue of its motion.

xylose

A colorless, crystalline pentose sugar, C5H10O5, derived from xylan, straw, corncobs, etc., by treating with heated dilute sulfuric acid, and dehydrating to furfural if stronger acid is used.

Forbidden Zone

A relatively large energy separation between an insulator's highest filled electron energy band and the next higher energy vacant band. Beginning in the fourth energy level, a set of seven degenerate orbitals per energy level, higher in energy than s, p, and d orbitals of the same energy level.

Cohesive Forces

All the forces of attraction among particles of a liquid.