A ligand atom whose electrons are shared with a Lewis acid.
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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
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.
Display of component wavelengths (colours) of electromagnetic radiation.
The slowest step in a mechanism, the step that determines the overall rate of reaction.
Ability of a substance to exhibit amphiprotism by accepting donated protons.
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.
Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.
Equation for a chemical reaction in which all formulas are written as if all substances existed as molecules, only complete formulas are used.
Hydrocarbons that contain only single bonds. They are also called alkanes or paraffin hydrocarbons.
Energy required to pair two electrons in the same orbital.
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.
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.
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.
A tube having a very small inside diameter.
Study of chemical changes produced by electrical current and the production of electricity by chemical reactions.
Vaporization of a liquid below its boiling point.