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An Acid that can form two or more hydronium ions per molecule, often a least one step of ionization is weak.

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Cis-

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

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.

Secondary Voltaic Cells

Voltaic cells that can be recharged, original reactanats can be regenerated be reversing the direction of the current flow.

Sigma Orbital

Molecular orbital resulting from head-on overlap of two atomic orbitals.

xylidine

Any of six isomeric compounds that have the formula C8H11N, are derivatives of xylene, and resemble aniline: used in dye manufacture.

Covalent Bond

Chemical bond formed by the sharing of one or more electron pairs between two atoms.

Fluorescence

Absorption of high energy radiation by a substance and subsequent emission of visible light.

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.

Integrated Rate Equation

An equation giving the concentration of a reactant remaining after a specified time, has different mathematical form for different orders of reactants.

Ternary Compound

A compound consisting of three elements, may be ionic or covalent.