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A ligand atom whose electrons are shared with a Lewis acid.

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Radical

An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)

Binding Energy (nuclear binding energy)

The energy equivalent (E = mc^2) of the mass deficiency of an atom.  where: E = is the energy in joules, m is the mass in kilograms, and c is the speed of light in m/s^2

Moderator

A substance such as hydrogen, deuterium, oxygen or paraffin capable of slowing fast nuetrons upon collision.

Law of Conservation of Matter

There is no detectable change in the quantity of matter during an ordinary chemical reaction.

Spectrum

Display of component wavelengths (colours) of electromagnetic radiation.

Rate-determining Step

The slowest step in a mechanism, the step that determines the overall rate of reaction.

Amphiprotism

Ability of a substance to exhibit amphiprotism by accepting donated protons.

Theoretical Yield

Maximum amount of a specified product that could be obtained from specified amounts of reactants, assuming complete consumption of limiting reactant according to only one reaction and complete recovery of product.

xanthene dye

Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.

 

Molecular Equation

Equation for a chemical reaction in which all formulas are written as if all substances existed as molecules, only complete formulas are used.

Saturated Hydrocarbons

Hydrocarbons that contain only single bonds. They are also called alkanes or paraffin hydrocarbons.

Pairing Energy

Energy required to pair two electrons in the same orbital.

Electron Affinity

The amount of energy absorbed in the process in which an electron is added to a neutral isolated gaseous atom to form a gaseous ion with a 1- charge, has a negative value if energy is released.

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.

Band of Stability

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

Photon

A packet of light or electromagnetic radiation, also called quantum of light.

 

Valence Bond Theory

Assumes that covalent bonds are formed when atomic orbitals on different atoms overlap and the electrons are shared.

Capillary

A tube having a very small inside diameter.

Electrochemistry

Study of chemical changes produced by electrical current and the production of electricity by chemical reactions.

Evaporization

Vaporization of a liquid below its boiling point.