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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 0
    chemical entity 0
      atom 0
        metal atom 0
          polonium atom 0
            polonium-210 atom 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 0
    subatomic particle 0
      composite particle 0
        hadron 0
          baryon 0
            nucleon 0
              atomic nucleus 0
                atom 0
                  main group element atom 0
                    p-block element atom 0
                      chalcogen 0
                        polonium atom 0
                          polonium-210 atom 0
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