Atom query properties
Atom query properties dialog performs a quick access to the most frequently used query properties in Advanced tab of Atom properties dialog.
     
        
| Property | Tool | Available values | 
| Total Hydrogen | .H+ | H0-H4 | 
| .H- | H4-H0 | |
| Implicit Hydrogen | .h+ | h0-h4 | 
| .h- | h4-h0 | |
| Bond order | .v+ | v0-v8 | 
| .v- | v8-v0 | |
| Connections | .X+ | X0-X3 | 
| .X- | X3-X0 | |
| Ring count | .R+ | R0-R6 | 
| .R- | R6-R0 | |
| Smallest ring size | .r+ | r0-r30 | 
| .r- | r30-r0 | |
| Ring bond | .rb+ | rb0-rb4 | 
| .rb- | rb4-rb0 | |
| .rb* | as drawn | |
| Substitutions | .s+ | s0-s6 | 
| .s- | s6-s0 | |
| .s* | as drawn | |
| Unsaturated | .u | u | 
| Aromaticity | .a/A | a, A |