Polar Covalent Bonds

Polar Covalent Bonds   ** In the H2or Cl2 molecule, the two electrons constituting the covalent bond are equally shared by the two identical nuclei. Due to even distribution of (+) and (–) charge, the two bonded atoms remain electrically neutral. Such a bond is called nonpolar covalent bond. ** …

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Hydrogen Bonding (H-Bonding)

  Hydrogen Bonding – (H-Bonding)   ** When hydrogen (H) is covalently bonded to a highly electronegative atom X (O, N, F), the shared electron pair is pulled so close to X that a strong dipole results   ** Since the shared pair is removed farthest from H atom, its …

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Co-ordinate Covalent bond

Co-ordinate Covalent bond   ** In a normal covalent bond, each of the two bonded atoms contributes one electron to make the shared pair. ** In some cases, a covalent bond is formed when both the electrons are supplied entirely by one atom. Such a bond is called co-ordinate covalent …

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Covalent Bond

Covalent Bond   ** The electron transfer theory could not explain the bonding in molecules such as H2, O2, Cl2 etc., and in organic molecules, that had no ions. ** It was G.N. Lewis who suggested that two atoms could achieve stable 2 or 8 electrons in the outer shell by …

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Ionic Bond

  Ionic Bond   ** This type of bond is established by transfer of an electron from one atom to another. ** Let us consider a general case when an atom A has one electron in the valence shell and another atom B has seven electrons. A has one electron …

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