Multiple Choice
Why do atoms combine to form chemical bonds?
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11. Bonding & Molecular Structure
Chemical Bonds
Multiple Choice
In which of the following substances are the atoms held together by metallic bonding?
A
Water (H_2O)
B
Sodium chloride (NaCl)
C
Copper (Cu)
D
Carbon dioxide (CO_2)
Verified step by step guidance1
Understand the nature of metallic bonding: Metallic bonding occurs between metal atoms where valence electrons are delocalized and shared in a 'sea of electrons' that holds the metal atoms together.
Analyze Water (H_2O): Water molecules are held together by covalent bonds between hydrogen and oxygen atoms, and intermolecular hydrogen bonds, not metallic bonds.
Analyze Sodium chloride (NaCl): Sodium chloride is an ionic compound where positively charged sodium ions and negatively charged chloride ions are held together by ionic bonds, not metallic bonds.
Analyze Copper (Cu): Copper is a metal, and its atoms are held together by metallic bonding, characterized by a lattice of metal cations surrounded by a sea of delocalized electrons.
Analyze Carbon dioxide (CO_2): Carbon dioxide molecules are held together by covalent bonds between carbon and oxygen atoms, with intermolecular forces between molecules, not metallic bonds.
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