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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-210 atom
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Accession:CHEBI:37340 term browser browse the term
Definition:The radioactive isotope of polonium with relative atomic mass 209.98286 and half-life of 138.376 days; the only naturally occurring isotope of polonium.
Synonyms:related_synonym: (210)84Po;   (210)Po;   Formula=[210Po];   InChI=1S/Po/i1+1;   InChIKey=HZEBHPIOVYHPMT-OUBTZVSYSA-N;   SMILES=[210Po];   polonium, isotope of mass 210;   polonium-210
 xref: CAS:13981-52-7;   Gmelin:76756

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19810
    chemical entity 19810
      atom 19809
        metal atom 17360
          polonium atom 0
            polonium-210 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19810
    subatomic particle 19809
      composite particle 19809
        hadron 19809
          baryon 19809
            nucleon 19809
              atomic nucleus 19809
                atom 19809
                  main group element atom 19706
                    p-block element atom 19706
                      chalcogen 19458
                        polonium atom 0
                          polonium-210 atom 0
paths to the root