Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

The de Broglie Wavelength02:32

The de Broglie Wavelength

In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
Electron Behavior00:54

Electron Behavior

Electrons are negatively charged subatomic particles that are attracted to an orbit around the positively-charged nucleus of an atom. They reside in locations that are associated with energy levels called shells and are further organized into sub-shells and orbitals within each shell.Electrons Orbit the NucleusElectrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the nucleus...
Electron Behavior01:09

Electron Behavior

Electrons are negatively charged subatomic particles attracted to and orbit around the positively-charged nucleus of an atom. They reside in spaces associated with energy levels called shells and are further organized into subshells and orbitals within each shell.
Electrons Orbit the Nucleus
Electrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the nucleus have less energy,...
Resonance and Hybrid Structures02:16

Resonance and Hybrid Structures

According to the theory of resonance, if two or more Lewis structures with the same arrangement of atoms can be written for a molecule, ion, or radical, the actual distribution of electrons is an average of that shown by the various Lewis structures.
Resonance Structures and Resonance Hybrids
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 bonds.
Scanning Electron Microscopy01:07

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...
The Bohr Model02:18

The Bohr Model

Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as the nucleus...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Substituted naphthalene reaction rates with peroxy-acid treatment: prediction of reactivity using PEST.

SAR and QSAR in environmental research·2019
Same author

A quantitative structure-activity relationship to predict efficacy of granular activated carbon adsorption to control emerging contaminants.

SAR and QSAR in environmental research·2016
Same author

On the encapsulation of hydrocarbon components of natural gas within molecular baskets in water. The role of C-H···π interactions and the host's conformational dynamics in the process of encapsulation.

Chemical communications (Cambridge, England)·2014
Same author

Polycyclic aromatic hydrocarbon reaction rates with peroxy-acid treatment: prediction of reactivity using local ionization potential.

SAR and QSAR in environmental research·2013
Same author

Barriers to rotation adjacent to double bonds. 2. n-Propyl versus isopropyl groups.

Journal of the American Chemical Society·2011
Same author

Transferable atom equivalent multicentered multipole expansion method.

Journal of computational chemistry·2003

Video Experimental Relacionado

Updated: Jul 11, 2026

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

La respuesta de los electrones a los cambios estructurales.

K B Wiberg, C M Hadad, C M Breneman

    Science (New York, N.Y.)
    |May 31, 1991
    PubMed
    Resumen

    Las propiedades moleculares están dictadas por la distribución de electrones, analizadas a través de la densidad de carga a partir de cálculos ab initio. Este método revela efectos de sustitución, cambios estructurales y excitaciones electrónicas, ayudando al análisis de fenómenos químicos.

    Más Videos Relacionados

    Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
    06:53

    Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

    Published on: July 27, 2018

    Visualization of miniSOG Tagged DNA Repair Proteins in Combination with Electron Spectroscopic Imaging (ESI)
    13:06

    Visualization of miniSOG Tagged DNA Repair Proteins in Combination with Electron Spectroscopic Imaging (ESI)

    Published on: September 24, 2015

    Videos de Experimentos Relacionados

    Last Updated: Jul 11, 2026

    Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
    10:35

    Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

    Published on: May 29, 2018

    Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
    06:53

    Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

    Published on: July 27, 2018

    Visualization of miniSOG Tagged DNA Repair Proteins in Combination with Electron Spectroscopic Imaging (ESI)
    13:06

    Visualization of miniSOG Tagged DNA Repair Proteins in Combination with Electron Spectroscopic Imaging (ESI)

    Published on: September 24, 2015

    Área de la Ciencia:

    • Química cuántica es la química cuántica.
    • Modelado molecular y modelado molecular.

    Sus antecedentes:

    • Las propiedades moleculares están fundamentalmente determinadas por la distribución de electrones.
    • La densidad de carga, derivada de las funciones de onda, cuantifica esta distribución de electrones.

    Objetivo del estudio:

    • Explorar la utilidad del análisis de densidad de carga en la comprensión de las propiedades moleculares.
    • Para demostrar cómo la densidad de carga revela los efectos de las modificaciones moleculares y los estados electrónicos.

    Principales métodos:

    • Utilizando cálculos orbitales moleculares ab initio para obtener funciones de onda.
    • Analizando la densidad de carga a través de métodos como la densidad de proyección o gráficos de diferencia de carga.
    • Dividir la densidad de carga para calcular las propiedades atómicas a través de la integración numérica.

    Principales resultados:

    • El análisis de densidad de carga proporciona información sobre los efectos de los sustituyentes y los cambios estructurales.
    • Se pueden dilucidar los impactos de la excitación electrónica en las propiedades moleculares.
    • Las propiedades atómicas tales como cargas y dipolos pueden ser cuantificadas.

    Conclusiones:

    • La densidad de carga es una herramienta versátil para analizar las propiedades moleculares y los fenómenos químicos.
    • Los cálculos ab initio junto con el análisis de densidad de carga ofrecen un enfoque poderoso en química computacional.