Elements of the periodic Group 0, also called rare gases, formerly called inert gases, He,Ne,Ar, Kr, Xe, Rn.
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Double Salt
Solid consisting of two co-crystallized salts.
Electron Configuration
Specific distribution of electrons in atomic orbitals of atoms or ions.
Metathesis Reactions
Reactions in which two compounds react to form two new compounds, with no changes in oxidation number. Reactions in which the ions of two compounds exchange partners.
Square Planar
A term used to describe molecules and polyatomic ions that have one atom in the center and four atoms at the corners of a square.
Ionic Geometry
The arrangement of atoms (not lone pairs of electrons) about the central atom of a polyatomic ion.
Hydration
Reaction of a substance with water.
Ideal Gas
A hypothetical gas that obeys exactly all postulates of the kinetic-molecular theory.
Charle's Law
At constant pressure the volume occupied by a definite mass of gas is directly proportional to its absolute temperature.
Double Bond
Covalent bond resulting from the sharing of four electrons (two pairs) between two atoms.
ytterbia
Ytterbia is a colorless compound, Yb2O3, used in certain alloys and ceramics. Also known as ytterbium oxide.
