Protactinium on periodic table of the elements, with element symbol Pa

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Protactinium on periodic table of the elements. Radioactive metallic element in the actinide series, with atomic number 91 and symbol Pa. Formerly protoactinium, meaning nuclear precursor of actinium.

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Photo credit: © PeterHermesFurian / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 91, actinide, actinium, actinoid, atom, atomic, blue, chart, chemical, chemistry, display, education, element, elements, grid, illustration, material, mendeleev, metal, metallic, number, pa, periodic, perspective, precursor, protactinium, proto, protoactinium, radioactive, rare, raster, research, science, substance, symbol, system, table, tabular, toxic, vector