AtomType

Class representing an atom type.
Properties:
System
- The system which the Atom Type belongs to
Number
- Serial number of the atom type
Atoms
- List of Atoms belonging to this AtomType
Charge
- Charge of the atom-type as average over charges of all atoms of the type in a.u.
Mass
- Mass of the atom-type as average over masses of all atoms of the type in a.u.

Methods:
WriteAsRDFinp()
- Return a string representation of AtomType for RDF.inp
AddAtom(atom)
- Add atom to the AtomType