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Crystal field designation for an inner orbital complex, contains electrons paired t2g orbitals before eg orbitals are occupied in octahedral complexes.

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Osmotic Pressure

The hydrostatic pressure produced on the surface of a semipermable membrane by osmosis.

Charle's Law

At constant pressure the volume occupied by a definite mass of gas is directly proportional to its absolute temperature.

Gamma Ray

High energy electromagnetic radiation. A highly penetrating type of nuclear radiation similar to x-ray radiation, except that it comes from within the nucleus of an atom and has a higher energy. Energywise, very similar to cosmic ray except that cosmic rays originate from outer space.

Double Bond

Covalent bond resulting from the sharing of four electrons (two pairs) between two atoms.

Homogeneous Mixture

A mixture which has uniform composition and properties throughout.

Dispersing Medium

The solvent-like phase in a colloid.

S Orbital

A spherically symmetrical atomic orbital, one per energy level.

Avogadro's Law

At the same temperature and pressure, equal volumes of all gases contain the same number of molecules.

Spectrum

Display of component wavelengths (colours) of electromagnetic radiation.

D-Orbitals

Beginning in the third energy level, aset of five degenerate orbitals per energy level, higher in energy than s and p orbitals of the same energy level.