Question

Сопоставьте свойства веществ с молекулярной ионной и атомной кристаллической решеткой ​. ПЖЖ

Answer 1

Для веществ с ионной кристаллической решеткой характерны высокие температуры плавления, твёрдость, плотность, хорошая электропроводность. В узлах молекулярной кристаллической решетки находятся молекулы, которые удерживаются за счет межмолекулярных вандервальсовых сил

Answer 2

Ответ:

Объяснение:

Молекулярной: малая твёрдость, низкие.

Атомной:высокие,прочная, твёрдые.

Answer 3

Comparing Properties of Substances with Molecular, Ionic, and Atomic Crystal Lattices

When comparing the properties of substances with molecular, ionic, and atomic crystal lattices, it's important to consider their structural differences and how these differences impact their physical and chemical properties.

Molecular Crystal Lattice: - In a molecular crystal lattice, the constituent particles are molecules held together by intermolecular forces such as van der Waals forces, hydrogen bonding, or dipole-dipole interactions. - These crystals are typically soft and have low melting and boiling points due to the weak intermolecular forces holding the molecules together. - Examples of substances with molecular crystal lattices include solid forms of noble gases, organic compounds like sugar, and some covalent compounds.

Ionic Crystal Lattice: - In an ionic crystal lattice, the constituent particles are ions held together by strong electrostatic forces of attraction. - These crystals are hard and brittle with high melting and boiling points due to the strong electrostatic forces between the ions. - Examples of substances with ionic crystal lattices include common salt (sodium chloride), potassium chloride, and calcium fluoride.

Atomic Crystal Lattice: - In an atomic crystal lattice, the constituent particles are individual atoms held together by covalent or metallic bonds. - These crystals can vary widely in properties depending on the type of bonding present. For example, diamond has a very hard atomic lattice due to strong covalent bonds, while metals have a more malleable atomic lattice due to metallic bonding. - Examples of substances with atomic crystal lattices include diamond (covalent bonding) and metals like copper and iron (metallic bonding).

It's important to note that the differences in the bonding and arrangement of particles in these crystal lattices lead to distinct physical and chemical properties, such as hardness, melting point, and electrical conductivity.