Such molecules would be suited to acting as quantum bits, or qubits, the basic unit of information in quantum systems. But ...

When two hydrogen atoms get close enough, the electron from each atom feels an attraction from the proton in the other atom's nucleus. This attraction pulls the atoms together. The electrons end up ...

The questions in this quiz are suitable for GCSE chemistry students studying atom economy, percentage yield and choosing reaction pathways. If you struggled with the quiz, don't panic - we've got you!