Metallic bonds are the type of chemical bond found in metals, where positive metal ions are surrounded by a 'sea' of delocalised electrons. These electrons are free to move throughout the structure and are not held by any specific atom.
This bonding explains many of the properties of metals, including:
Good electrical and thermal conductivity (due to free-moving electrons)
Malleability and ductility (layers of atoms can slide over each other)
High melting and boiling points (strong forces between ions and electrons)
The metallic bond holds the metal atoms together very strongly, making metals both useful and durable.
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