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Related Concept Videos

Electron Configurations02:46

Electron Configurations

Electron configurations and orbital diagrams can be determined by applying the Aufbau principle (each added electron occupies the subshell of lowest energy available), Pauli exclusion principle (no two electrons can have the same set of four quantum numbers), and Hund’s rule of maximum multiplicity (whenever possible, electrons retain unpaired spins in degenerate orbitals).
The relative energies of the subshells determine the order in which atomic orbitals are filled (1s, 2s, 2p, 3s, 3p, 4s,...
Metallic Solids02:37

Metallic Solids

Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
Electronic Structure of Atoms02:28

Electronic Structure of Atoms


An atom comprises protons and neutrons, which are contained inside the dense, central core called the nucleus, with electrons present around the nucleus. Taking into account the wave–particle duality of electrons and the uncertainty in position around the nucleus, quantum mechanics provides a more accurate model for the atomic structure. It describes atomic orbitals as the regions around the nucleus where electrons of discrete energy exist, characterized by four quantum numbers:  n, l, ml, and...
Valence Bond Theory02:42

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...

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Related Experiment Video

Updated: Jun 25, 2026

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
08:19

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles

Published on: March 2, 2016

Atomic and electronic structure at Au/CdSe interfaces.

R de Paiva1, Rosa Di Felice

  • 1National Center on nanoStructures and bioSystems at Surfaces (S3) of INFM-CNR, Modena, Italy.

ACS Nano
|February 12, 2009
PubMed
Summary
This summary is machine-generated.

Thin gold (Au) layers can form epitaxially on cadmium selenide (CdSe) surfaces under specific Au-rich conditions. Electron state hybridization occurs at the interface, but it is localized and unlikely to impact nanotechnology applications.

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Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
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Published on: March 2, 2016

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
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Atom Probe Tomography Studies on the Cu(In,Ga)Se2 Grain Boundaries
09:51

Atom Probe Tomography Studies on the Cu(In,Ga)Se2 Grain Boundaries

Published on: April 22, 2013

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Surface Science

Background:

  • Understanding metal-semiconductor interfaces is crucial for developing advanced electronic and optical devices.
  • Gold (Au) and cadmium selenide (CdSe) are key materials in nanotechnology, particularly for plasmonic and excitonic applications.

Purpose of the Study:

  • To investigate the atomic and electronic structure of thin gold overlayers on CdSe surfaces.
  • To determine the conditions for epitaxial growth and the nature of interfacial electronic interactions.

Main Methods:

  • Utilized plane-wave pseudopotential periodic-supercell density functional theory (DFT) calculations.
  • Employed a gradient-corrected exchange-correlation functional for accurate electronic structure analysis.
  • Explored various interface models, including nonstoichiometric and mixed atomic layers.

Main Results:

  • Epitaxial formation of thin Au layers on CdSe is possible under Au-rich conditions during early deposition stages.
  • Identified hybridization between gold and cadmium selenide electron states at the interface.
  • This hybridization is spatially confined to the interface region.

Conclusions:

  • The localized electronic hybridization at the Au/CdSe interface is not expected to significantly alter plasmonic or excitonic properties.
  • Findings provide insights into the fundamental interactions governing metal-semiconductor interfaces for nanotechnology.