Generic Query Atom
MarvinSketch supports the following types of Generic Query Atoms:
| 
         Name  | 
                
         Description  | 
        
| 
         A  | 
                
         Any (any atom except hydrogen)  | 
        
| 
         AH  | 
                
         Any atom, including hydrogen  | 
        
| 
         Q  | 
                
         Hetero (any atom except hydrogen and carbon)  | 
        
| 
         QH  | 
                
         Hetero atom or hydrogen (any atom except carbon)  | 
        
| 
         M  | 
                
         Metal (contains alkali metals, alkaline earth metals, transition metals, actinides, lanthanides, poor(basic) metals, Ge, Sb and Po)  | 
        
| 
         MH  | 
                
         Metal or hydrogen  | 
        
| 
         X  | 
                
         Halogen (F,Cl,Br or I)  | 
        
| 
         XH  | 
                
         Halogen or hydrogen  | 
        
Generic Query Atoms can be added to a query structure to include a wide range of elements. For a more detailed description of this please see the Query Guide.
To add a Generic Query Atom to the molecule, select one of the Generic Query Atom types from the Periodic Table and place it on the canvas.