Two high-quality single-crystal sp²c-COFs have been developed, demonstrating the generality of this approach. This work ...

A research team from Hokkaido University has confirmed a century-old theory by discovering a stable single-electron covalent ...

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 ...

We can use dot and cross diagrams to show how a pair of electrons forms a covalent bond. Here are the dot and cross diagrams for some other common molecules.

Each atom then has a complete outer shell of electrons. The slideshow shows how a covalent bond forms between a hydrogen atom and a chlorine atom, making hydrogen chloride. A simple molecule ...