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Hydrocarbons that contain double or triple carbon-carbon bonds.

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Amorphous Solid

A noncrystalline solid with no well-defined ordered structure.

Antibonding Orbital

A molecular orbital higher in energy than any of the atomic orbitals from which it is derived, lends instability to a molecule or ion when populated with electrons, denoted with a star (*) superscript or symbol.

Hydrate

A solid compound that contains a definite percentage of bound water.

Hybridization

Mixing a set of atomic orbitals to form a new set of atomic orbitals with the same total electron capacity and with properties and energies intermediate between those of the original unhybridized orbitals.

Hydration

Reaction of a substance with water.

Molecule

The smallest particle of an element or compound capable of a stable, independent existence.

Linkage Isomers

Isomers in which a particular ligand bonds to a metal ion through different donor atoms.

 

Octet Rule

Many representative elements attain at least a share of eight electrons in their valence shells when they form molecular or ionic compounds, there are some limitations.

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.

Cis-

The prefix used to indicate that groups are located on the same side of a bon about which rotation is restricted.