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Learn about the definition, properties and applications of electric dipole moment, a measure of the separation of positive and negative charges within a system. Find out how electric dipoles interact with external fields and how they are used in physics and chemistry.
A dipolar compound is an electrically neutral molecule with a positive and a negative charge in at least one canonical description. Learn about the types, examples, and reactions of dipolar compounds in organic chemistry.
Learn how polarity is a separation of electric charge in molecules or chemical groups, and how it depends on electronegativity differences. Find out how to classify bonds as polar, nonpolar, or ionic, and how to measure bond dipole moments.
A dipole is an electromagnetic phenomenon that occurs in two ways: an electric dipole deals with the separation of positive and negative charges, and a magnetic dipole is the closed circulation of electric current. Learn about the types, properties, and examples of dipoles in physics, chemistry, and biology.
Learn the definition, formula, and applications of the transition dipole moment, a vector quantity that describes the electric dipole associated with a quantum transition. Find out how it determines the interaction of a system with an electromagnetic wave and the selection rules for allowed transitions.
Polarizability is the tendency of matter to acquire an electric dipole moment in an electric field. Learn how polarizability affects dielectric constant, refractive index, molecular structure and crystallography, and how it varies with atomic and molecular size.
A dielectric is an electrical insulator that can be polarised by an applied electric field. Learn about the electric susceptibility, dispersion and causality, and dipolar polarisation of dielectrics, and see how they affect phenomena such as capacitance, refractive index and self-focusing.
Intermolecular force is the force that mediates interaction between molecules, such as hydrogen bonding, ion–dipole forces, van der Waals forces, etc. Learn about the types, properties, and examples of intermolecular forces and their role in chemistry and biology.