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A unit of pressure, the pressure that will support a column of mercury 760 mm high at 0 °C.

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Peroxide

A compound containing oxygen in the -1 oxidation state. Metal peroxides contain the peroxide ion, O22

20 interesting chemistry facts

20 interesting chemistry facts.

Electron Deficient Compounds

Compounds that contain at least one atom (other than H) that shares fewer than eight electrons.

End Point

The point at which an indicator changes colour and a titration is stopped.

Lewis Base

Any species that can make available a share in an electron pair.

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

Coordination Number

In describing crystals, the number of nearest neighbours of an atom or ion. The number of donor atoms coordinated to a metal.

Electron Affinity

The amount of energy absorbed in the process in which an electron is added to a neutral isolated gaseous atom to form a gaseous ion with a 1- charge, has a negative value if energy is released.

Solvation

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

Equilibrium Constant

A quantity that characterizes the position of equilibrium for a reversible reaction, its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.