Electron density refers to the probability of finding electrons in a specific region around an atom or molecule. It is a key concept in quantum chemistry and is often visualized using electron density maps, which show areas where electrons are likely to be located. Higher electron density indicates a greater likelihood of finding electrons in that area. In chemical bonding, electron density plays a crucial role in determining the strength and type of bonds between atoms. For example, in a covalent bond, shared electrons create regions of high electron density between the bonded atoms, influencing molecular shape and reactivity. Understanding electron density helps scientists predict how molecules will interact in various chemical reactions.