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Capítulo 9
Tipos de Enlaces Químicos
Chemical bonding theories were pioneered by American chemist Gilbert N. Lewis. He developed a model called the Lewis model to explain the type…
Los Símbolos de Lewis y la Regla del Octeto
Chemical bonds are complex interactions between two or more atoms or ions, which reduce the potential energy of the molecule. Gilbert N. Lewis…
Enlace Iónico y Transferencia de Electrones
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its…
El Ciclo de Born-Haber
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a…
Tendencias en Energía de Celosía: Tamaño y Carga Iónica
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a…
Enlaces Covalentes y Estructuras de Lewis
Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual…
Electronegatividad
Whether a bond is nonpolar or polar covalent is determined by a property of the bonding atoms called electronegativity.  Electronegativity…
Polaridad de Enlace, Momento Dipolo y Porcentaje de Carácter Iónico
The absolute value of the difference in electronegativity (ΔEN) of two bonded atoms provides a rough measure of the polarity to be expected…
Estructuras de Lewis de Compuestos Moleculares e Iones Poliatómicos
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined: Determine the…
Resonancia
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O…
Cargas Formales
In some cases, there are seemingly more than one valid Lewis structures for molecules and polyatomic ions. The concept of formal charges can be used…
Excepciones a la Regla del Octeto
Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three…
Energías de Enlace y Longitudes de Enlace
Stable molecules exist because covalent bonds hold the atoms together. The strength of a covalent bond is measured by the energy required to break…
Los Enlaces Metálicos
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the…
Medición de coherencias vibracionales ultrarrápidos en cationes radicales poliatómico con campo de fuerte ionización adiabático
We present a pump-probe method for preparing vibrational coherences in polyatomic radical cations and probing their ultrafast dynamics. By shifting…
Preparación de nanoláminas de carbono a temperatura ambiente
Amphiphilic molecules equipped with a reactive, carbon-rich "oligoyne" segment consisting of conjugated carbon-carbon triple bonds self-assemble into…

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