A vertical column in the periodic table, also called a family.
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Covalent Bond
Chemical bond formed by the sharing of one or more electron pairs between two atoms.
Salicylate
A salt or ester of salicylic acid.
Valence Bond Theory
Assumes that covalent bonds are formed when atomic orbitals on different atoms overlap and the electrons are shared.
Resonance
The concept in which two or more equivalent dot formulas for the same arrangement of atoms (resonance structures) are necessary to describe the bonding in a molecule or ion.
Dubnium
Discovered : at both Berkeley, California, USA, and Dubna, near Moscow, Russia in 1970. Description:A highly radioactive metal which does not occur naturally, and of which only a few atoms have ever been made. It is of research interest only. Origin:The element is named after the Russian town of Dubna.
Cation
A positive ion, an atom or group of atoms that has lost one or more electrons.
Photochemical Oxidants
Photochemically produced oxidizing agents capable of causing damage to plants and animals.
Transition State Theory
Theory of reaction rates that states that reactants pass through high-energy transition states before forming products.
xylidine
Any of six isomeric compounds that have the formula C8H11N, are derivatives of xylene, and resemble aniline: used in dye manufacture.
Overlap
The interaction of orbitals on different atoms in the same region of space.
