Covalent bonding, which involves the sharing of electron pairs between specific atoms, is also absent in pure sodium. Furthermore, sodium is an excellent conductor of both heat and electricity, a property explained by the mobility of the free electrons throughout the lattice.
How Sodium Layers Slide: The Role of Metallic Bonding
The space between these cores is filled with a uniform, mobile electron gas. This model describes a lattice of positive metal ions immersed in a delocalized cloud of valence electrons.
Visualizing the Structure Imagine sodium not as separate balls connected by sticks, but as a grid of equal spheres. Unlike ionic bonding, which involves the transfer of electrons to form charged ions held together by electrostatic forces (as in sodium chloride), metallic bonding involves a "pooling" of electrons.
How Sodium Layers Slide: The Role of Metallic Bonding
Sodium's Electron Configuration To understand why sodium specifically exhibits metallic bonding, one must look at its atomic structure. This structure is often visualized as a lattice of positive ions bathed in a sea of negative charge.
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