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Group VIIA elements: F, Cl, Br, I

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Solution

Homogeneous mixture of two or more substances.

Potential Energy

Energy that matter possesses by virtue of its position, condition or composition.

Hydrate

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

Hydrogenation

The reaction in which hydrogen adds across a double or triple bond.

Ion

An atom or a group of atoms that carries an electric charge.

Delocalization

Of electrons, refers to bonding electrons that are distributed among more than two atoms that are bonded together, occurs in species that exhibit resonance.
The formation of a set of molecular orbitals that extend over more than two atoms, important in species that valence bond theory describes in terms of resonance.

Ioniztion

The breaking up of a compound into separate ions.

Kinetic Energy

Energy that matter processes by virtue of its motion.

Atomic Mass Unit (amu)

One twelfth of a mass of an atom of the carbon-12 isotope, a unit used for stating atomic and formula weights, also called dalton.

Curie (Ci)

The basic unit used to describe the intensity of radioactivity in a sample of material. One curie equals 37 billion disintegrations per second or approximately the amount of radioactivty given off by 1 gram of radium.