atomic radius

(redirected from Atomic size)

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 ?
Berns surprised her family with her comic book "Atomic Size Matters'' at her graduation last year.
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.
In addition, the electronegativity difference [DELTA]x and the atomic size difference parameter [delta], the two parameters that related to the GFA of the glassy alloy, have been applied to evaluate the effect of Ag addition on the GFA of Ti-Zr-Be glassy alloy [19].
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.
For example, NAND flash products already use circuitry that is less than 20 nanometers in width, which is approaching atomic size. Spintronics could surmount this memory impasse by harnessing the spin of electrons instead of their charge.
The getter is used to keep the inside of the bulb clean, which helps increase the product lifespan by cleaning "atomic size" contamination that might remain in the bulb after it's put together.
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.
Strontium is very similar in properties and atomic size to calcium, so biological processes can't easily separate the two elements.
Remarkably, the same effect that suppresses intermingling within a crystal - atomic size mismatch - favors intermixing at its surface.

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