A polar covalent bond is characterized by which of the following?

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Multiple Choice

A polar covalent bond is characterized by which of the following?

Polar covalent bonds come from unequal sharing of electrons because the two atoms have different electronegativities. The more electronegative atom pulls electron density toward itself, creating a partial negative charge on that atom and a partial positive charge on the other. This distribution gives the bond a dipole moment and polarity. If electrons were shared equally, that would be a nonpolar covalent bond. If electrons were transferred to form ions, you’d have an ionic bond. Delocalization describes electrons that are spread over multiple atoms or across a structure (as in resonance or metallic bonding), not the localized unequal sharing in a polar covalent bond. Hence the defining feature is unequal sharing of electrons.

Polar covalent bonds come from unequal sharing of electrons because the two atoms have different electronegativities. The more electronegative atom pulls electron density toward itself, creating a partial negative charge on that atom and a partial positive charge on the other. This distribution gives the bond a dipole moment and polarity.

If electrons were shared equally, that would be a nonpolar covalent bond. If electrons were transferred to form ions, you’d have an ionic bond. Delocalization describes electrons that are spread over multiple atoms or across a structure (as in resonance or metallic bonding), not the localized unequal sharing in a polar covalent bond. Hence the defining feature is unequal sharing of electrons.

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