You have it backwards. The atomic weight of thorium 90 is 232.0381
After the IUPAC rule: 232Th, etc.Also used: Th-232, thorium-232
Alpha
Thorium-232 is appearing in the thorium series.
Thorium has an atomic number of 90, or in other words, 90 protons in its nucleus. The mass number or the identification of the -232 isotope with its 142 neutrons is a red herring - in isotopy the number of neutrons may vary but the atomic number or the count of protons is the same. If the atomic number varied from 90 it would by definition no longer be thorium.
Th atomic number : 90 atomic weight : 232.0381g/mol oxidation number : 4
The atomic weight of thorium 232 is 232,0381
Thorium, with the chemical symbol Th, is the chemical element with the atomic number 90.
After the IUPAC rule: 232Th, etc.Also used: Th-232, thorium-232
The atomic weight (not mass !) of thorium is 232,0381.
Thorium 232 has 90 protons and electrons and 142 neutrons. Electron configuration: 6d27s2
Thorium (Th).
Alpha
The density of Thallium is 11,850 kg/m3 or 11.85 g/cm3. The SI density standard is kg/m3.
Unfortunately WikiAnswers doesn't accept subscript/superscript.For the isotope thorium-232: 232Th90232 is a superscript (mass number) and 90 is a subscript (atomic number).
Thorium-232.
Thorium-232 is appearing in the thorium series.
Thorium has an atomic number of 90, or in other words, 90 protons in its nucleus. The mass number or the identification of the -232 isotope with its 142 neutrons is a red herring - in isotopy the number of neutrons may vary but the atomic number or the count of protons is the same. If the atomic number varied from 90 it would by definition no longer be thorium.