Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Subset of the OWL classes and properties describing the CDK data model. An atom is a subclass of an atom type, which is a subclass of an element; the element has a symbol; an atom container contains atoms and bonds which are subclasses of electron containers; bonds binds two or more atoms.
