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A decrease in the radii of the elements following the lanthanides compared to what would be expected if there were no f-transition metals.

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Displacement Reactions

Reactions in which one element displaces another from a compound.

 

Beta Particle

Electron emitted from the nucleus when a neuton decays to a proton and an electron.

Coordination Compound or Complex

A compound containing coordinate covalent bonds.

Limiting Reactant

Substance that stoichiometrically limits the amount of product(s) that can be formed.

Dipole

Refers to the separation of charge between two covalently bonded atoms.

Homogeneous Catalyst

A catalyst that exists in the same phase (solid, liquid or gas) as the reactants. The process is called Homogeneous Catalysis.

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Periodicity

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

Condensation

Liquefaction of vapor.

Amphoterism

The ability to react with both acids and bases.Ability of substance to act as either an acid or a base.