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Quantum mechanical solution to a wave equation that designates the particular orbital within a given set (s, p, d, f ) in which a electron resides.

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Coordination Compound or Complex

A compound containing coordinate covalent bonds.

Electronic Transition

The transfer of an electron from one energy level to another.

Percent Purity

The percent of a specified compound or element in an impure sample.

Activation Energy

Amount of energy that must be absorbed by reactants in their ground states to reach the transition state so that a reaction can occur. In other words, activation energy is the minimum energy required for a chemical reaction to occur.

Activity of a component of ideal mixture

A dimensionless quantity whose magnitude is: equal to molar concentration in an ideal solution, equal to partial pressure in an ideal gas mixture, and defined as 1 for pure solids or liquids.

Lanthanide Contraction

A decrease in the radii of the elements following the lanthanides compared to what would be expected if there were no f-transition metals.

Percent Composition

The mass percent of each element in a compound.

Standard Molar Volume

The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.

Homologous Series

A series of compounds in which each member differs from the next by a specific number and kind of atoms.

Pauli Exclusion Principle

No two electrons in the same atom may have identical sets of four quantum numbers.

Flash Point

The temperature at which a liquid will yield enough flamable vapour to ignite. There are various recognized industrial testing methods, therefore the method used must be stated.

Inhibitory Catalyst

An inhibitor, a catalyst that decreases the rate of reaction.

Ideal Solution

A solution that obeys Raoult's Law exactly.

Tetrahedral

A term used to describe molecules and polyatomic ions that have one atom in center and four atoms at the corners of a tetrahedron.

Half-Life

The time required for half of a reactant to be converted into product(s). The time required for half of a given sample to undergo radioactive decay.

Saccharic

of or derived from saccharin or a saccharine substance.

 

Voltage

Potential difference between two electrodes, a measure of the chemical potential for a redox reaction to occur.

Native State

Refers to the occurrence of an element in an uncombined or free state in nature.

 

Ionization Energy

The minimum amount of energy required to remove the most loosely held electron of an isolated gaseous atom or ion.

Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.