Ionic crystals are composed of alternating positive and negative ions. Metallic crystals consist of metal cations surrounded by a "sea" of mobile valence electrons. Covalent crystals are composed of atoms which are covalently bonded to one another. Molecular crystals are held together by weak intermolecular forces.
Hope it helps you
Mark as brainliest plz
chlorine is a chemical element with the symbol cl and atomic number 17. the second-lightest around 1630, chlorine gas was first synthesised in a chemical reaction, but not then known as "solid chlorine" had a structure of chlorine hydrate (cl2·h2o). "isis chlorine attack on security forces confirmed – iraq officials".