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Ions resulting from the formation of coordinate covalent bonds between simple ions and other ions or molecules.

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Octahedral

A term used to describe molecules and polyatomic ions that have one atom in the center and six atoms at the corners of a octahedron.

Valence Electrons

Outermost electrons of atoms, usually those involved in bonding.

K Capture

Absorption of a K shell (n=1) electron by a proton as it is converted to a neutron.

Lewis Base

Any species that can make available a share in an electron pair.

Substitution Reaction

A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.

Safranine

Also called "phenosafranine". A purplish-red, water-soluble dye, C18H14N4, used for textiles and as a stain in microscopy.

Atom

The smallest particle of an element.

Particulate Matter

Fine divided solid particles suspended in polluted air.

Alkaline Battery

A dry cell in which the electrolyte contains KOH.

Foam

Colloidal suspension of a gas in a liquid.