Two methyl groups of the same carbon atom.
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Emission Spectrum
Spectrum associated with emission of electromagnetic radiation by atoms (or other species) resulting from electronic transitions from higher to lower energy states.
Isomers
Different substances that have the same formula.
Coordinate Covalent Bond
A covalent bond in which both shared electrons are donated by the same atom, a bond between a Lewis base and a Lewis acid.
Chain Termination Step
The combination of two radicals, which removes the reactive species that propagate the change reaction.
Daughter Nuclide
Nuclide that is produced in a nuclear decay.
Peroxide
A compound containing oxygen in the -1 oxidation state. Metal peroxides contain the peroxide ion, O22
Gas of rotten eggs
If you happen to break a rotten egg, then you know the smell of hydrogen sulfide, because the stench of the spoiled egg depends on of its presence in rotting protein substances.
xenon
A heavy, colorless, chemically inactive, monatomic gaseous element used for filling radio, television, and luminescent tubes. Symbol: Xe, at. wt.: 131.30, at. no.: 54.
Standard Entropy
The absolute entropy of a substance in its standard state at 298 K.
Coulometry
The quantitative application of Faraday's Law to the analysis of materials. The current and time are the usual variables measured.
