Question

How is electronegativity related to covalent bonding?

Answer 1

electronegativity of both the  elements decides that towards to which element 
there will be more electron density 

ex. HCl
as Cl is more electronegative than H so, it will acquire δ⁻  and H will acquire δ⁺
charge 

hope,it helps 

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Answer 2

Answer:

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Whether a bond is nonpolar or polar covalent is determined by a property of the bonding atoms called electronegativity. Electronegativity is a measure of the tendency of an atom to attract electrons (or electron density) towards itself. It determines how the shared electrons are distributed between the two atoms in a bond. The more strongly an atom attracts the electrons in its bonds, the larger its electronegativity. Electrons in a polar covalent bond are shifted toward the more electronegative atom; thus, the more electronegative atom is the one with the partial negative charge. The greater the difference in electronegativity, the more polarized the electron distribution and the larger the partial charges of the atoms.

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