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Electron Configuration of Multielectron Atoms

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...

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Related Experiment Video

Updated: Jun 17, 2026

Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals

Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals

Published on: December 11, 2013

Electronic structures of the CdSe/CdS core-shell nanorods.

Ying Luo¹, Lin-Wang Wang

¹Department of Physics, Beijing Normal University, Beijing 100875, China.

|January 2, 2010

Summary

Investigating cadmium selenide/cadmium sulfide (CdSe/CdS) core-shell nanorods reveals complex interactions influencing their electronic structure. Surface passivation and core position significantly alter electron and hole localization, impacting nanorod properties.

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Last Updated: Jun 17, 2026

Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals

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Published on: December 11, 2013

Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

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Published on: February 11, 2016

Synthesis of Hierarchical ZnO/CdSSe Heterostructure Nanotrees

Synthesis of Hierarchical ZnO/CdSSe Heterostructure Nanotrees

Published on: November 29, 2016

Area of Science:

Materials Science
Quantum Chemistry
Nanotechnology

Background:

Core-shell nanostructures, such as CdSe/CdS, are crucial in optoelectronic applications.
Understanding their electronic properties is key to optimizing device performance.

Purpose of the Study:

To systematically investigate the electronic structures of CdSe/CdS core-shell nanorods.
To analyze the interplay of band alignment, quantum confinement, piezoelectric fields, and dipole moments.

Main Methods:

Large-scale first-principles calculations were employed.
Comparative analysis of systems with and without specific attributes (band alignment, confinement, etc.).

Main Results:

Complex interplays between electronic effects determine the nanorod band gap and wave function localization.
Hole wave functions localize in the CdSe core; electron wave functions localize in the CdS shell.
Surface passivation affects electron localization distance and dipole moments, influencing charge separation.

Conclusions:

The piezoelectric effect has a minor role in CdSe/CdS nanorods.
Electronic structure is tunable by adjusting the CdSe core position and surface passivation.
These findings offer insights for designing advanced nanomaterials.