Thorium. Element 90 of the periodic table of chemical elements.
Palabras clave
thorium,
th,
radioactive,
magnesium,
isotope,
element,
periodic table,
molecular,
atom,
symbol,
oxidation,
material,
chemistry,
structure,
industry,
matter,
process,
physics,
property,
discovery,
poster,
cube,
metallic,
laser,
relief,
laboratory,
experimentation