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A very slightly soluble compound.

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Standard Entropy

The absolute entropy of a substance in its standard state at 298 K.

Daughter Nuclide

Nuclide that is produced in a nuclear decay.

 

Nitrogenases

A class of enzymes found in bacteria within root nodules in some plants, which catalyze reactions by which N2 molecules from the air are converted to ammonia.

 

Mass Deficiency

The amount of matter that would be converted into energy if an atom were formed from constituent particles.

Percent Purity

The percent of a specified compound or element in an impure sample.

Solvation

The process by which solvent molecules surround and interact with solute ions or molecules.

Molecular Weight

The mass of one molecule of a nonionic substance in atomic mass units.

Periodic Table

An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.

Overlap

The interaction of orbitals on different atoms in the same region of space.

Pairing

A favourable interaction of two electrons with opposite m , values in the same orbital.