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An atom in a molecule or polyatomic ion that is bonded to more than one other atom.

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Spectrochemical Series

Arrangement of ligands in order of increasing ligand field strength.

Critical Pressure

The pressure required to liquefy a gas (vapor) at its critical temperature.

Overlap

The interaction of orbitals on different atoms in the same region of space.

Critical Temperature

The temperature above which a gas cannot be liquefied, the temperature above which a substance cannot exhibit distinct gas and liquid phases.

Contact Process

Industrial process by which sulfur trioxide and sulfuric acid are produced from sulfur dioxide.

ytterbium

A rare metallic element found in gadolinite and forming compounds resembling those of yttrium. Symbol: Yb, at. wt.: 173.04, at. no.: 70, sp. gr.: 6.96. Cf."rare-earth element."

 

Nuclear Reactor

A system in which controlled nuclear fisson reactions generate heat energy on a large scale, which is subsequently converted into electrical energy.

Three ways to make patina at home

The first way is ammonia patination. To do this, take a plastic container. Put a couple of paper or ordinary towels at the bottom. Moisten them with ammonia. Then sprinkle with large table salt.

Excited State

Any state other than the ground state of an atom or molecule.

Radioactivity

The spontaneous disintegration of atomic nuclei.