atomic radius

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atomic radius

[ə′täm·ik ′rād·ē·əs]
(physical chemistry)
Also known as covalent radius.
Half the distance between the nuclei of two like atoms that are covalently bonded.
The experimentally determined radius of an atom in a covalently bonded compound. Also known as covalent radius.
References in periodicals archive ?
Since the atomic size of boron (85 pm) is larger than that of carbon (77 pm), it is difficult to accommodate boron into the graphitic network structure.
However, the site adds anything is possible as long as the character's atomic size will be clearly depicted in the series.
Other applications of helium include leak detection, wherein the small atomic size of helium facilitates detection of even miniscule cracks through a mass spectrometer.
Strontium is very similar in properties and atomic size to calcium, so biological processes can't easily separate the two elements.
At the lecture, 43 years ago, he also suggested what those concerned about the new science are calling ``nano's doomsday scenario'', the possibility that very small machines should be programmed to make even tinier machines and so on down the atomic size barrier itself.
Atoms come in a variety of sizes, but scientists often refer to a nominal atomic size as the diameter of the smallest, most abundant atom--hydrogen.
Remarkably, the same effect that suppresses intermingling within a crystal - atomic size mismatch - favors intermixing at its surface.
According to senior technical advisor, Dick James, "Chipworks has analyzed large feature sizes such as those found in passive optical devices and MEMS down to the atomic size features found in laser diodes".
This polymer nano tube technology will enable us to create structures in near atomic size concentrations to help dramatically improve the development and enhancement of drug and food formulations.
With the end of the cold war, NPO ALTAI, at the request of the Ministry of Geology USSR, turned its efforts and expertise in rocket fuels and atomic size powders towards thermo-chemical stimulation of marginally producing wells.
The scan probe microscope application is revolutionary because through DSP the product is capable of precise profiling of semiconductor and other structures of atomic size.
For example, NAND flash products already use circuitry that is less than 20 nanometers in width, which is approaching atomic size.

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