Rule of the octet

Rule that establishes that when forming a bond, the majority of the atoms acquires a stable group of eight electrons in its last level (as in a noble gas).

Regla del octeto Rule of the octet

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Chemical Glossary Terms

Chemical Terms begining with R

Radiation

Emission and propagation of the energy that is transmitted through space without the need for materi...

Catalyst radiation

Radiation range that is used to produce changes in a substance.

Electromagnetic radiation

Emission and propagation of energy without material support in the form of transverse waves, through...

Gamma radiation

Electromagnetic radiation of high frequency and high energy content. It has a very high penetration ...

Ionizing radiation

Radiation capable of ionizing gases and substances difficult to ionize. It consists of alpha, beta, ...

Ultraviolet radiation

Electromagnetic radiation that has a wavelength smaller than that of the visible. It is found betwee...

Radioactivity

Phenomenon consisting of the disintegration of the nuclei of the substance into simpler particles th...

Radioactive

Term that is applied to an atom whose nucleus is unstable and spontaneously emits a particle to beco...

Radical

Grouping of atom formally derived from an organic compound by loss of one or more hydrogen atoms, is...

Radical free

Chemical species that presents unpaired electrons. For example, NO. These do not meet the octet rule

Radio

Chemical element of symbol Ra, belonging to group 2 of the periodic table, of atomic number 88. It i...

Atomic radio

Half of the distance between two nuclei of the same element joined together. It is considered a peri...

Covalent radio

Distance between the nuclei of atoms that form a molecule through a covalent bond divided by 2. It i...

Ionic radio

Effective radius of the existing ions in the crystalline structures. The ions of the anions are larg...

Radiolitic

Series of products (glucose, formic acid, acetaldehyde, carbon dioxide) formed during some of the pr...

Radon

Chemical element of symbol Rn, belonging to group 18 of the periodic table, of atomic number 86. It ...

Beta rays.

One of the radiations emitted by radioactive materials. They are electrons of high kinetic energy.

Cathode Rays

Beam of particles (electrons) that are formed inside a discharge tube when a high potential is appli...

Gamma rays.

High energy photon emitted by an atomic nucleus in an internal transition between energy levels.

X-rays

Electromagnetic radiation of high frequency and energy. They propagate in a straight line, they are ...

Addition reaction

It occurs in unsaturated organic compounds in which the double and triple bonds are attacked by vari...

Chain reaction.

Self-sustaining chemical reaction in which a chemical reaction causes one or more chemical reactions...

Chemical reaction

Transformation suffered by chemical substances, called reagents, when they give rise to new substanc...

Reaction.

Process by which one or more elements or chemical compounds (reactants) form other new substances (p...

Reagent

Each of the substances that causes a chemical reaction. In chemical analysis, specific reagents are ...

Tollens reagent

Reagent used in the recognition of aldehydes. It is replaced by a mixture of silver nitrate and ammo...

Limit reagent.

Reagent present in the minimum stoichiometric amount. Determine the maximum amount of products forme...

Recrystallization

Purification process of a substance that consists of dissolving it in a suitable solvent to remove t...

Crystal network

Regular ordering in geometrical form of the atoms, molecules or ions of a substance in an internal c...

Reduction

Chemical reaction consisting of the gain of electrons. The substance that produces the reduction of ...

Rule of the octet

Rule that establishes that when forming a bond, the majority of the atoms acquires a stable group of...

Stoichiometric ratio

Ratio in which the reactants of a reaction or proportion in which the products are formed are combin...

performance

Relative amount of a product, obtained in a chemical reaction, compared to the amount that is theore...

Renio

Chemical element of symbol Re, belonging to group 7 of the periodic table, of atomic number 75 and a...

Resins

Generic name of different organic substances of solid or semi-solid presence very viscous, transpare...

Resonance

Representation of a molecule by means of one or more forms, from which an intermediate form is obtai...

Rhodium

Chemical element of Rh symbol, belonging to group 9 of the periodic table, of atomic number 45 and a...

Roentgenium

Chemical element of symbol Rg, belonging to group 11 of the periodic table, of atomic number 111. It...

Rubidium

Chemical element of symbol Rb, belonging to group 1 of the periodic table, atomic number 37 and atom...

Ruthenium

Chemical element of Ru symbol, belonging to group 8 of the periodic table, of atomic number 44 and a...

Rutherfordio

Chemical element of symbol Rf, belonging to group 4 of the periodic table, of atomic number 104. It ...

Rule of the octet

Chemical Glossary Terms

Chemical Terms begining with R

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