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Organic Chemistry - Heteroatoms

A heteroatom is any atom that is not carbon or hydrogen (in an organic compound) The 23 elements and their prefixes are defined by the IUPAC Gold Book and the Hantzsch-Widman system, given in order of priority. (The heterocycle in the image is Pyridine, the heteroatom is nitrogen)
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Last updated: March 15, 2026
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First submittedMarch 15, 2026
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Answer
Fluorine
Chlorine
Bromine
Iodine
Oxygen
Sulfur
Selenium
Tellurium
Nitrogen
Phosphorus
Arsenic
Antimony
Bismuth
Silicon
Germanium
Tin
Lead
Boron
Aluminium
Gallium
Indium
Thallium
Mercury
Answer
fluora
chlora
broma
ioda
oxa
thia
selena
tellura
aza
phospha
arsa
stiba
bisma
sila
germa
stanna
plumba
bora
aluma
galla
indiga
thalla
mercura
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