The atomic weight of thorium 232 is 232,0381
The atomic weight of thorium 232 is 232,0381 ± 0,0001; the atomic weights are generally determined by mass spectrometry.
The atomic weight (not mass !) of thorium is 232,0381.
Thorium, with the chemical symbol Th, is the chemical element with the atomic number 90.
thorium
232.0381
The atomic weight of thorium-232 is approximately 232.03806 atomic mass units (u).
Thorium constitutes about 4E-8% of the visible baryonic matter of the universe by mass. Visible baryonic matter is about 4.9% of the total mass of the universe, as per the latest estimates. So the mass-percentage of thorium in the universe would be 4E-8 x 0.049 = ... very little.
Thorium 232 has 90 electrons and protons, also 142 neutrons.
Common compounds of thorium: thorium dioxide, thorium trifluoride, thorium tetrafluoride, thorium tetrachloride, thorium triiodide, thorium diiodide, thorium tetraiodide, thorium nitrate, thorium oxalate, thorium carbide, thorium sulfides, thorium nitride, thorium oxinate, etc.
- After alpha disintegration the isotope uranium-238 is transformed in the isotope thorium-234. - After alpha disintegration the isotope uranium-235 is transformed in the isotope thorium-230. Platinum is a misspelling ?
The density of thorium is 11,724 g/cm3. The Mohs hardness of thorium is 3. Density is the ratio between mass and volume. Hardness is a measure of resistance of a material under a compressive force.
After 24,10(3) days (the half-time of this isotope) the mass is 50 %.
234 is the mass of that particular Uranium isotope. Exactly 234,040 952 088 ± 0,000 001 960 u.a.