Multiple Choice
In which type of bond do atoms share electrons?
11. Bonding & Molecular Structure
Chemical Bonds
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Which type of bond forms when shared electrons are not shared equally?
A
Nonpolar covalent bond
B
Polar covalent bond
C
Metallic bond
D
Ionic bond
Verified step by step guidance1
Identify the types of chemical bonds: covalent, ionic, and metallic. Covalent bonds involve the sharing of electrons between atoms, ionic bonds involve the transfer of electrons, and metallic bonds involve a 'sea' of electrons shared among metal atoms.
Understand the concept of electronegativity: Electronegativity is the ability of an atom to attract shared electrons in a chemical bond. Different atoms have different electronegativities.
Differentiate between polar and nonpolar covalent bonds: In a nonpolar covalent bond, electrons are shared equally between atoms with similar electronegativities. In a polar covalent bond, electrons are shared unequally due to a difference in electronegativity between the bonded atoms.
Recognize the characteristics of a polar covalent bond: When electrons are shared unequally, the more electronegative atom attracts the electrons more strongly, creating a partial negative charge, while the less electronegative atom has a partial positive charge.
Conclude that a polar covalent bond forms when shared electrons are not shared equally, due to the difference in electronegativity between the two atoms involved in the bond.
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