inductive effect

This term is a specialized technical expression used almost exclusively in organic chemistry to describe the redistribution of electron density. It refers to the permanent displacement of electrons along a chain of single bonds due to the electronegativity of a substituent group. This effect is categorized as either electron-withdrawing (-I) or electron-donating (+I), which directly influences the reactivity and stability of a molecule.

Because it describes a specific physical phenomenon in molecular orbital theory, the term is used in a formal, academic register. It is distinct from the resonance effect, which involves pi bonds and delocalization; the inductive effect is strictly limited to sigma bonds and diminishes rapidly as the distance from the electronegative atom increases.