Technetium. Element 43 of the periodic table of chemical elements.
Keywords
technetium,
synthetic,
residue,
element,
periodic table,
molecular,
atom,
symbol,
oxidation,
material,
chemistry,
structure,
industry,
matter,
process,
physics,
property,
discovery,
poster,
cube,
metallic,
laser,
relief,
laboratory,
experimentation