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protactinium
element with symbol Pa and atomic number of 91
Details
- Instance of
- chemical element
- atomic number
- 91
- canonical SMILES
- [Pa]
- chemical formula
- Pa
- described by source
- Armenian Soviet Encyclopedia
- discoverer or inventor
- Kazimierz Fajans, Otto Hahn, Lise Meitner
- electronegativity
- 2
- element symbol
- Pa
- found in taxon
- Paris polyphylla var. chinensis
- ionic radius
- 1.04, 0.90, 0.78
- mass
- 231.03588
- named after
- actinium
- time of discovery or invention
- 1917
- topic has template
- Template:Infobox protactinium
- topic's main category
- Category:Protactinium
- Unicode character
- 鏷
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