The Relation of the Density of an Ionic Compound and its Unit Cell Dimensions

Flashcards covering key terms and concepts related to ionic compounds, lattice energy, bonding in metals and semiconductors, and phase diagrams.

Ionic Compound

A compound formed by the electrostatic attraction between positively and negatively charged ions.

Unit Cell Dimensions

The lengths and angles defining the unit cell of a crystal structure.

Lattice Energy

The energy released when ions in the gas phase combine to form one mole of a solid ionic compound.

Coulomb’s Law

A formula that describes the energy between two charged ions, depending on the charge and distance between them.

Lattice Enthalpy

The change in enthalpy when one mole of an ionic solid is formed from its gaseous ions.

Electrostatic Interactions

Attractive or repulsive interactions between charged particles.

Intrinsic Semiconductors

Semiconductors that have an electrical conductivity based on the characteristics of the pure material.

Extrinsic Semiconductors

Semiconductors whose conductivity is modified by the introduction of impurities, known as dopants.

Phase Diagram

A graphical representation showing the phases of a substance as a function of temperature and pressure.

Molecular Solids

Solids that consist of molecules held together by intermolecular forces.

Metallic Bonds

The sum of the attractive forces between free-floating valence electrons and the positively charged metal ions.

Covalent-Network Solids

Solids in which atoms are bonded covalently in a network, leading to high melting points.

Metallic Structure

The arrangement of metal atoms in a lattice structure that allows electron mobility.

Fermi Level

The highest occupied energy level at absolute zero temperature.

Buckminsterfullerene

A spherical fullerene molecule made entirely of carbon, resembling a soccer ball.

Dopants

Impurities added to semiconductors in order to alter their properties.