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Characteristic of the post-transition minerals, tendency of the outermost s electrons to remain nonionized or un shared in compounds.

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Amine

Derivatives of ammonia in which one or more hydrogen atoms have been replaced by organic groups.

Band

A series of very closely spaced, nearly continuous molecular orbitals that belong to the crystal as a whole.

Three ways to make patina at home

The first way is ammonia patination. To do this, take a plastic container. Put a couple of paper or ordinary towels at the bottom. Moisten them with ammonia. Then sprinkle with large table salt.

Neutralization

The reaction of an acid with a base to form a salt and water. Usually, the reaction of hydrogen ions with hydrogen ions to form water molecules.

Gangue

Sand, rock, and other impurities surrounding the mineral of interest in an ore.

Free Radical

A highly reactive chemical species carrying no charge and having a single unpaired electron in an orbital.

Proton

A subatomic particle having a mass of 1.0073 amu and a charge of +1, found in thew nuclei of atoms.

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.

Ionic Geometry

The arrangement of atoms (not lone pairs of electrons) about the central atom of a polyatomic ion.

Electronic Transition

The transfer of an electron from one energy level to another.