What is another word for free electron?
Pronunciation: [fɹˈiː ɪlˈɛktɹɒn] (IPA) 
A free electron is an electron that is not bound to an atom or molecule and is able to move easily through a substance. Synonyms for this term include unbound electron, roaming electron, and delocalized electron. These terms all refer to the same concept of an electron that is not confined to a specific atom or molecule. Free electrons are important in many areas of physics and chemistry, including the study of materials and the behavior of electrons in electrical circuits. Understanding the properties of free electrons is critical for developing new technologies and advancing our knowledge of the natural world.
