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Number of moles of solute per litre of solution.

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Mass Number

The sum of the numbers of protons and neutrons in an atom, an integer.

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.

Alums

Hydrated sulfates of the general formula M+M3+(SO4)2.12H2).

How to make crystal glass

From history we know that the idea of creating crystal belongs to the British: they were the first to add lead oxides to the charge material, and as a result got glass with unusual “voice”, transparency and sparkling faces. Classical crystal contains 24% of lead oxide, but there are products with a higher content of up to 30%.

Coulomb

Unit of electrical charge.

Strong Field Ligand

Ligand that exerts a strong crystal or ligand electrical field and generally forms low spin complexes with metal ions when possible.

Addition Reaction

A reaction in which two atoms or groups of atoms are added to a molecule, one on each side of a double or triple bond. Types of addition reaction include electrophilic, nucleophilic (polar) and free radical addition (non-polar).

Conformations

Structures of a compound that differ by the extent of rotation about a single bond.

Periodic Law

The properties of the elements are periodic functions of their atomic numbers.

Spectrochemical Series

Arrangement of ligands in order of increasing ligand field strength.