In MarvinSketch hydrogens are automatically added to the structures. Generally, these are implicit hydrogens and are displayed based on the options set in View > Implicit Hydrogens.
To view all hydrogens explicitly displayed as atoms with bonds to neighbors, chose Structure > Add > Add Explicit Hydrogens. The Structure > Remove > Remove Explicit Hydrogens will return to the previous display mode. You can use these functions locally, that is, only apply it to the selected structures.
To view implicit hydrogens by symbol, use the View > Implicit Hydrogens menu group. This option is disabled in Spacefill and Ball and Stick display modes.
The table below lists the available implicit hydrogens options with examples.
|On All||Hetero and Terminal||Hetero||Off|