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What type of energy is stored in the chemical bonds of a molecule?
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11. Bonding & Molecular Structure
Chemical Bonds
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Which type of chemical bond results from the unequal sharing of electrons between atoms?
A
Nonpolar covalent bond
B
Polar covalent bond
C
Metallic bond
D
Ionic bond
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Understand that a chemical bond forms when atoms share or transfer electrons to achieve a more stable electron configuration.
Recognize that in a covalent bond, atoms share electrons. If the sharing is equal, the bond is nonpolar covalent; if unequal, it is polar covalent.
Recall that unequal sharing of electrons occurs when atoms have different electronegativities, causing a partial positive and partial negative charge on the atoms.
Identify that a polar covalent bond results from this unequal sharing, leading to a dipole moment in the molecule.
Differentiate this from ionic bonds (complete transfer of electrons) and metallic bonds (delocalized electrons among metal atoms), which are not characterized by unequal sharing.
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