Question

If an atom with a high electronegativity value bonds with an atom with a low electronegativity value, what impact does the difference in electronegativity value have on the bond?

Answer 1

the bond is polar covalent, so it can have strong intermolecular forces (dipole-dipole or hydrogen bonding)

Answer 2

When a bond has atoms of different electronegativity, then the atoms with a high electronegativity will attract more electrons than the atoms with a lower electronegativity and will produce an asymmetric polar covalent bond.  

• The tendency of an atom to attract the shared electrons in a covalent bond is termed electronegativity. The higher the value of the electronegativity, the more robust the electrons are attracted by the element.  

• When the atoms with different electronegativity form a bond, that is, one having higher electronegativity and the other having lower electronegativity, the resulting bond will be asymmetric.  

• On the more electronegative atom, there will be a partial negative charge, and on the less electronegative atom, there will be a partial positive charge.  

Thus, the formation of the asymmetric polar bond will take place between the two atoms.

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