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B Group elements except IIB in the periodic table, sometimes called simply transition elements EX. Fe, Ni, Cu, Ti .
For further information see Metals.

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Dermal toxicity

Adverse health effects resulting from skin exposure ot a substance.

Low Spin Complex

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

Band

A series of very closely spaced, nearly continuous molecular orbitals that belong to the crystal as a whole.

Derivative

A compound that can be imagined to arise from a partent compound by replacement of one atom with another atom or group of atoms. Used extensively in orgainic chemistry to assist in identifying compounds.

Flammable

A liquid as defined by NFPD and DOT as having a flash point below 37.8°C (100°F).

Ampere

Unit of electrical current, one ampere equals one coulomb per second.

 

Activity Series

A listing of metals (and hydrogen) in order of decreasing activity.

Deuterium

An isotope of hydrogen whose atoms are twice as massive as ordinary hydrogen,deuterion atoms contain both a proton and a neutron in the nucleus.

Addition Reaction

A reaction in which two atoms or groups of atoms are added to a molecule, one on each side of a double or triple bond. Types of addition reaction include electrophilic, nucleophilic (polar) and free radical addition (non-polar).

Total Ionic Equation

Equation for a chemical reaction written to show the predominant form of all species in aqueous solution or in contact with water.