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Nuclide that is produced in a nuclear decay.

 

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Film badge

A small patch of photographic film worn on clothing to detect and measure accumulated incident ionizing radiation.

Geometrical Isomers

Compounds with different arrangements of groups on either side of a bond with restricted rotation, such as a double bond or a single bond in a ring, for example cis-trans isomers of certain alkenes. Stereoisomers that are not mirror images of each other, also known as position isomers.

Distilland

The material in a distillation apparatus that is to be distilled.

Curie (Ci)

The basic unit used to describe the intensity of radioactivity in a sample of material. One curie equals 37 billion disintegrations per second or approximately the amount of radioactivty given off by 1 gram of radium.

Homogeneous Equilibria

Equilibria involving only one species in a single phase. For example, all gases, all liquids or all solids.

xenon trioxide

A colorless, nonvolatile solid, XeO3, explosive when dry: in solution it is called xenic acid.

Combination Reaction

Reaction in which two substances (elements or compounds) combine to form one compound.

xenon hexafluoride

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

Activity Series

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

Dimer

Molecule formed by combination of two smaller (identical) molecules.