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covalence
(redirected from covalently)

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covalence

In chemistry, a form of valence in which two atoms unite by sharing electrons in pairs, so that each atom provides half the shared electrons (see also covalent bond).



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Norbloc covalently bonds to the polymer backbone, eliminating release into the environment.
It is cleaved during the mixing process, and the silane bonds covalently to the silica surface.
Because the DNA cannot bind directly to the glass, the surface is first treated with silane to covalently attach reactive amine, aldehyde, or epoxies groups that allow stable attachment of DNA, proteins, and other molecules.
 
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