Question

what is isomerism
what is di-electric constan​

Answer 1

Answer:

Dielectric constant measurements, effective dipole moments and rotational isomer abundances in alkyl nitrites

Effect of carbon-skeleton isomerism on the dielectric properties and proton conduction of organic cocrystal compounds assembled from 1,2,4,5-benzenetetracarboxylic acid and piperazine derivatives†

Answer 2

each of two or more compounds with the same formula but a different arrangement of atoms in the molecule and different properties.

The relative permittivity, or dielectric constant, of a material is its permittivity expressed as a ratio relative to the vacuum permittivity. Permittivity is a material property that affects the Coulomb force between two point charges in the material.

Formula

Dielectric

\kappa=\frac {E} {E_{0}}

\kappa = dielectric constant

{E} = permittivity of the substance

{E_{0}} = permittivity of a vacuum