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Ytterbia is a colorless compound, Yb2O3, used in certain alloys and ceramics. Also known as ytterbium oxide.

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Amphiprotism

Ability of a substance to exhibit amphiprotism by accepting donated protons.

Stereoisomers

Isomers that differ only in the way that atoms are oriented in space, consist of geometrical and optical isomers.

 

Low Spin Complex

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

van der Waals' Equation

An equation of state that extends the ideal gas law to real gases by inclusion of two empirically determined parameters, which are different for different gases.

Dipole-dipole Interactions

Attractive interactions between polar molecules, that is, between molecules with permanent dipoles.

Capillary

A tube having a very small inside diameter.

Linear Accelerator

A device used for accelerating charged particles along a straight line path.

Absorption Spectrum

Spectrum associated with absorption of electromagnetic radiation by atoms (or other species) resulting from transitions from lower to higher energy states. An absorption spectrum is the inverse of an emission spectrum.

Aryl Group

Group of atoms remaining after a hydrogen atom is removed from the aromatic system.

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).