The slideshow shows how a covalent bond forms between a hydrogen atom and a chlorine atom, making hydrogen chloride. A simple molecule contains only a few atoms, so the sizes of atoms and simple ...

Chinese scientists proposed a novel imine-to-olefin transformation strategy to synthesize single-crystal sp² ... organic molecules through strong covalent bonds. COFs have numerous applications ...

Calcium becomes a +2 ion and each chlorine becomes a -1 ion. The +2 calcium ion and the two -1 chloride ions attract each other and form an ionic bond and the compound calcium chloride. One calcium ...