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The reaction of a substance with water or its ions.

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Reducing Agent

The substance that reduces another substance and is oxidized.

The most expensive metal in the world

Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.

Electron Deficient Compounds

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

Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.

Oxide

A binary compound of oxygen.

Salinometer

An instrument for measuring the amount of salt in a solution. Also,"salimeter, salometer."

D-Orbitals

Beginning in the third energy level, aset of five degenerate orbitals per energy level, higher in energy than s and p orbitals of the same energy level.

 

Electron

A subatomic particle having a mass of 0.00054858 amu and a charge of 1-.

Diagonal Similarities

Refers to chemical similarities in the Periodic Table of elements of Period 2 to elements of Period 3 one group to the right, especially evident toward the left of the periodic table.

Delocalization

Of electrons, refers to bonding electrons that are distributed among more than two atoms that are bonded together, occurs in species that exhibit resonance.
The formation of a set of molecular orbitals that extend over more than two atoms, important in species that valence bond theory describes in terms of resonance.