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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

Term:polonium-208 atom
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Accession:CHEBI:37368 term browser browse the term
Definition:The radioactive isotope of polonium with relative atomic mass 207.98123 and half-life of 2.898 years.
Synonyms:related_synonym: (208)84Po;   (208)Po;   Formula=[208Po];   InChI=1S/Po/i1-1;   InChIKey=HZEBHPIOVYHPMT-BJUDXGSMSA-N;   SMILES=[208Po];   polonium-208

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Path 1
Term Annotations click to browse term
  CHEBI ontology 21787
    chemical entity 21785
      atom 21773
        metal atom 18235
          polonium atom 0
            polonium-208 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 21787
    subatomic particle 21773
      composite particle 21773
        hadron 21773
          baryon 21773
            nucleon 21773
              atomic nucleus 21773
                atom 21773
                  main group element atom 21690
                    p-block element atom 21690
                      chalcogen 20858
                        polonium atom 0
                          polonium-208 atom 0
paths to the root