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A colorless, crystalline compound, XeF4, prepared by heating a gaseous mixture of fluorine and xenon.

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First Law of Thermodynamics

The total amount of energy in the universe is constant (also known as the Law of Conservation of Energy) energy is neither created nor destroyed in ordinary chemical reactions and physical changes.

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

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.

Cis-

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

Central Atom

An atom in a molecule or polyatomic ion that is bonded to more than one other atom.

Electrophoresis

A technique for separation of ions by rate and direction of migration in an electric field.

Noble Gases (Rare Gases)

Elements of the periodic Group 0, also called rare gases, formerly called inert gases, He,Ne,Ar, Kr, Xe, Rn.

Band of Stability

Band containing nonradioactive nuclides in a plot of number of neutrons versus atomic number.

Catenation

Bonding of atoms of the same element into chains or rings.
The bonding together of atoms of the same element to form chains.
The ability of an element to bond to itself.

Oxidation-reduction Reactions

Reactions in which oxidation and reduction occur, also called redox reactions.