Classify each of the following substances, in the solid state, as molecular, ionic, covalent (ne

step 1 In this question we've been given a list of substances for compounds and we've been asked to cla

Classify each of the following substances, in the solid...

Key Concepts

Metallic Solids

Metallic solids are characterized by a lattice of metal ions surrounded by a 'sea of delocalized electrons.' This type of bonding, known as metallic bonding, gives rise to properties such as electrical conductivity, malleability, ductility, and luster. The mobility of the free electrons allows metallic solids to conduct heat and electricity efficiently.

Covalent (Network) Solids

Covalent network solids consist of atoms interconnected by a continuous network of covalent bonds. This extensive bonding throughout the structure leads to very high melting points and remarkable hardness. The strength and stability of these solids, such as seen in diamond, stem from the rigidity and directionality of covalent bonds.

Ionic Solids

Ionic solids are formed by a lattice of positive and negative ions bound together by strong electrostatic forces known as ionic bonds. This structure typically results in high melting points, hardness, and brittleness. The stability of ionic solids relies on the regular, repeating arrangement of oppositely charged ions.

Molecular Solids

Molecular solids are composed of discrete molecules held together by intermolecular forces such as van der Waals forces, dipole-dipole interactions, or hydrogen bonds. Because these forces are generally weaker than the bonds found in other types of solids, molecular solids tend to have lower melting points and are often softer in nature.

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