The dot and cross diagram shows that a water molecule is made up of one oxygen ... so a triple bond forms between them. The structure of nitrogen is N≡N, showing that it has three shared pairs ...

But James Watson and Francis Crick's claim was a valid one, for they had in fact discovered the structure of DNA, the chemical that encodes instructions for building and replicating almost all ...

The structure of a small molecule can also be shown as a three-dimensional ball and stick model. These models show how the atoms and bonds are arranged in space. The diagram shows a ball and stick ...