Question

why polar and non polar covalent bonds formed
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Answer 1

$<b><u>$ Answer :-

Nonpolar Covalent Bond

A bond between 2 nonmetal atoms that have the same electronegativity and therefore have equal sharing of the bonding electron pair

Example: In H-H each H atom has an electronegativity value of 2.1, therefore the covalent bond between them is considered nonpolar

Polar Covalent Bond

A bond between 2 nonmetal atoms that have different electronegativities and therefore have unequal sharing of the bonding electron pair

Example: In H-Cl, the electronegativity of the Cl atom is 3.0, while that of the H atom is 2.1

The result is a bond where the electron pair is displaced toward the more electronegative atom. This atom then obtains a partial-negative charge while the less electronegative atom has a partial-positive charge.This separation of charge or bond dipole can be illustrated using an arrow with the arrowhead directed toward the more electronegative atom.

Answer 2

because they form the bonding by sharing of electrons...

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