Lewis acid

an electron acceptor that can react with a Lewis base to form a new covalent bond

The concept of Lewis acid and Lewis base is one of acids and bases, which is independent of the idea of (protons donor or acceptor). Gilbert Newton Lewis developed this idea in the early 20th century. In this concept, a Lewis acid can accept and bind electrons. Lewis acid is a substance that accepts two electrons to form a covalent bond.[1] A Lewis base is a substance that gives two electrons in the bonding.[2] A Lewis acid together with a Lewis base will react to make a compound called a Lewis adduct.


  1. "Acid". Academic Press Dictionary of Science and Technology. 2011. Retrieved 6 August 2011.
  2. "The Lewis Acid". facultyfp.salisbury.edu. 2009. Retrieved 6 August 2011.