the general schedule the general schedule gs is the predominant pay scale for federal employees especially employees in professional technical administrative or clerical positions the system consists of 15 grades from gs 1 the lowest level to gs 15 the highest level there are also 10 steps within each grade
chromophore(Noun) that part of the molecule of a dye responsible for its colour. chromophore(Noun) (more generally) the group of atoms in a molecule in which the electronic transition responsible for a given spectral band is located.
2. a group of atoms that enters into and goes out of chemical combination without change and that forms one of the fundamental constituents of a molecule. color radical chromophore. free radical a radical that carries an unpaired electron; such radicals are extremely reactive, with a very short half-life.oxygen radical a toxic metabolite of oxygen, such as superoxide or singlet oxygen, capable of damaging microorganisms and normal tissues.ree radÂ·iÂ·cal. a radical in its (usually transient) uncombined state; an atom or atom group carrying an unpaired electron and no charge; e.g., hydroxyl and methyl Free radicals may be involved as short-lived, highly active intermediates in various reactions in living tissue, notably in photosynthesis.