J-type basic atoms can be used like any other basic atoms to build up larger fragments and molecules. In fact, J (or Gh) can be considered just one more chemical symbol along with the 118 traditional ones. The element J has no pre-defined properties. Therefore you have to specify them where appropriate (c.f. the nuclear charge and atomic mass).
You may have different J-elements in a molecule, with different nuclear charges for instance. Yet, they must be denoted with the same chemical symbol J; the difference can only be made clear by the .text suffix in the atom type name.
It does no harm of course to make this suffix a concise but clear description of the main characteristics.
