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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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Atomic Number


Integral number of protons in the nucleus, defines the identity of element.
 

Denaturation

A process pertaining to a change in structure of a protein form regular to irregular arrangement of the polypeptide chains.

Physical Change

A change in which a substance changes from one physical state to another but no substances with different composition are formed. Example Gas to Liquid - Solid.

 

Binary Compound

A compound consisting of two elements, may be ionic or covalent.

Hund's Rule

All orbitals of a given sublevel must be occupied by single electrons before pairing begins.

Ionization

In aqueous solution, the process in which a molecular compound reacts with water and forms ions.

Complex Ions

Ions resulting from the formation of coordinate covalent bonds between simple ions and other ions or molecules.

Electromagnetic Radiation

Energy that is propagated by means of electric and magnetic fields that oscillate in directions perpendicular to the direction of travel of the energy.

Metathesis Reactions

Reactions in which two compounds react to form two new compounds, with no changes in oxidation number. Reactions in which the ions of two compounds exchange partners.

 

Optical Activity

The rotation of plane polarized light by one of a pair of optical isomers.