the one thing that comes to mind for me is about the diatomic elements H,N,F,O,I,Cl,B they\'re all really the ones that could form a molecule since they are composed of more than one element (all of them are subscript 2, as in H2). most other elements exists as 1. dont confuse this with MOLECULES which are composed of different atoms together. Solution the one thing that comes to mind for me is about the diatomic elements H,N,F,O,I,Cl,B they\'re all really the ones that could form a molecule since they are composed of more than one element (all of them are subscript 2, as in H2). most other elements exists as 1. dont confuse this with MOLECULES which are composed of different atoms together..