Ratiation extraneous to an experiment. Usually the low-level natural radiation form cosmic rays and trace radioactive substances present in our environment.
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Lanthanide Contraction
A decrease in the radii of the elements following the lanthanides compared to what would be expected if there were no f-transition metals.
Polymorphous
Refers to substances that crystallize in more than one crystalline arrangement.
Dynamic Equilibrium
An equilibrium in which processes occur continuously, with no net change. When two (or more) processes occur at the same rate so that no net change occurs.
xylose
A colorless, crystalline pentose sugar, C5H10O5, derived from xylan, straw, corncobs, etc., by treating with heated dilute sulfuric acid, and dehydrating to furfural if stronger acid is used.
Differential Scanning Calorimetry (DSC)
A technique for measuring the temperature, direction, and magnitude of thermal transitions in a sample material by heating/cooling and comparing the amount of energy required to maintain its rate of temperature increase or decrease with an inert reference material under similar conditions.
Formula Weight
The mass of one formula unit of a substance in atomic mass units.
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Saturated Solution
Solution in which no more solute will dissolve.
Pairing
A favourable interaction of two electrons with opposite m , values in the same orbital.
Viscosity
Resistance offered by the molecules of a liquid to flow is termed as viscosity.
