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Numbers that describe the energies of electrons in atoms, derived from quantum mechanical treatment.

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    The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...

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Most Popular

How is colored crystal made?

However, not everyone knows that in addition to the traditional transparent, there is still an unusually beautiful and spectacular colored crystal, which is obtained through the addition of various metal oxides into the glass. They give the crystal unusually noble shades of red, purple, blue, green and pink colors.

Basic Anhydride

The oxide of a metal that reacts with water to form a base.

Photochemical Smog

A brownish smog occurring in urban areas receiving large amounts of sunlight, caused by photochemical (light-induced) reactions among nitrogen oxides, hydrocarbons and other components of polluted air that produce photochemical oxidants.

 

Bronsted-Lowry Base

A proton acceptor

Salinometer

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

Inhibitory Catalyst

An inhibitor, a catalyst that decreases the rate of reaction.

Pairing Energy

Energy required to pair two electrons in the same orbital.

Lanthanides

Elements 58 to 71 (after lanthanum).

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.

Partial Pressure

The pressure exerted by one gas in a mixture of gases.