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Topic: Covalent radius


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  Covalent bond - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-22)
Covalently bonded hydrogen and carbon in a molecule of methane.
Covalent bonding is an intramolecular form of chemical bonding characterized by the sharing of one or more pairs of electrons between two components, producing a mutual attraction that holds the resultant molecule together.
Pure covalent bonds (which are usually non-soluble, are electrically non-conductive, and tend to exist as individual molecules), and ionic bonds (which are soluble, are electrically conductive when molten or in solution, and, in general, tend to exist in a crystalline form) are on two opposite ends of the spectrum and have different properties.
www.sciencedaily.com /encyclopedia/covalent_bond   (1198 words)

  
 Learn more about Covalent bond in the online encyclopedia.   (Site not responding. Last check: 2007-10-22)
Covalent bonding is a form of chemical bonding characterized by the sharing of one or more pairs of electrons, by two atoms, in order to produce a mutual attraction; atoms tend to share electrons, so as to fill their outer electron shells.
Covalent bonds are more common between non-metals, whereas ionic bonding is more common between two metal atoms or a metal and a non-metal atom.
Covalent bonding tends to be stronger than other types of bonding, such as ionic bonding.
www.onlineencyclopedia.org /c/co/covalent_bond.html   (982 words)

  
 Kids.net.au - Encyclopedia Atomic radius -   (Site not responding. Last check: 2007-10-22)
Atomic radius is the distance from the atomic nucleus to the outmost stable electron orbital in a atom that is at equilibrium and is measured in picometers or Angstroms.
Technically, the atomic radius is one half of the equilibrium internuclear distance between two adjacent atoms (which may either bonded covalently or present in a closely packed crystal lattice) of an element.
A covalent radius is one-half the distance between nuclei of two of the same atoms that are bonded to each other.
www.kidsseek.com /encyclopedia-wiki/at/Atomic_radius   (210 words)

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