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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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Nodal Plane

A region in which the probability of finding an electron is zero.

 

Periodic Law

The properties of the elements are periodic functions of their atomic numbers.

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

Insoluble Compound

A very slightly soluble compound.

Bubbles

Have you ever noticed that soap bubbles go up in winter and fall down in summer? The reason is that warm air is lighter than cold. And in winter the difference between the air temperature in the room (especially near the windows) and the one you exhale into the bubble is enough to overcome the heaviness of its shell.

xylidine

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

Anode

In a cathode ray tube, the positive electrode. Electrode at which oxidation occurs.

Half-Reaction

Either the oxidation part or the reduction part of a redox reaction.

Ground State

The lowest energy state or most stable state of an atom, molecule or ion.

Nernst Equation

Corrects standard electrode potentials for nonstandard conditions.