Multiple Choice
In a polar molecule such as HCl, which atom has a partial negative charge due to the dipole moment?
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11. Bonding & Molecular Structure
Dipole Moment
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
A covalent bond is likely to be polar when ________.
A
the bond is formed between two nonmetals with similar atomic radii
B
the molecule contains only carbon and hydrogen atoms
C
the two atoms involved have significantly different electronegativities
D
the two atoms involved have identical electronegativities
Verified step by step guidance1
Understand that a covalent bond involves the sharing of electrons between two atoms.
Recall that the polarity of a covalent bond depends on the difference in electronegativity between the two atoms involved.
Recognize that when two atoms have significantly different electronegativities, the shared electrons are pulled more toward the atom with higher electronegativity, creating a polar bond.
Note that if the two atoms have identical or very similar electronegativities, the electrons are shared equally, resulting in a nonpolar covalent bond.
Therefore, a covalent bond is likely to be polar when the two atoms involved have significantly different electronegativities.
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