electron shell

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Related to electron shell: Electron configuration, Orbitals, Electron orbital, Electron shell configuration
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Noun1.electron shell - a grouping of electrons surrounding the nucleus of an atom; "the chemical properties of an atom are determined by the outermost electron shell"
group, grouping - any number of entities (members) considered as a unit
References in periodicals archive ?
This nuclear clock will be fundamentally different from existing atomic clocks, which are based on transitions in the electron shell.
Therefore, we can assume that the protons of alpha-particles leaving the nucleus are associated with the second electron shell (the first one has only two electrons).
Each type of atom is unique because the different atoms have different numbers of protons in the nucleus, and different electron shell (layer) configurations.
As each element has a unique combination of electron shell energy levels, the spectrum of emitted x-rays is characteristic of the elements contained in the sample.
After having passed a polarizer cube and a lambda-quarter-plate, the laser light is circularly polarized and is then absorbed by the metastable atoms; in this absorption-process, the angular momentum of the photon is transferred to the electron shell of the atom.
The electron shell of Period 1 contains one energetic level, Period 2 contains two energetic levels, Period 3--three, Period 4--4, and so on.
Most materials are either ferromagnetic or ferroelectric based on the number of electrons in the ion's outer electron shell.
Atoms naturally have a positive or negative charge, depending on the number of electrons in the outer electron shell.
In the study reported in PNAS, the researchers found that the clusters were stable because the surface gold atoms in the core each had at least one surface-chemical bond and the gold core exhibited a strong electron shell closing.
The "hole" thereby created in the structure of the electron shell is filled up by an electron of higher energy.

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