A molecule with unequal electron distribution of bonding electrons is said to be covalent bond .
A partial positive charge on one atom and a partial negative charge on the other atom define a covalent connection. In a molecule, the atom with the stronger electron attraction obtains the partial negative charge, whereas the atom with the weaker electron attraction acquires the partial positive charge. Due to this, bonding electron distribution becomes uneven.
In a molecule , an atom with a higher electronegativity attract a bonded pair of electrons and gains a negative charge, whereas an atom with a lower electronegativity does not attract any bonding electrons and gains a positive charge .
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