Assertion: protactinium | /r/HasProperty | actinide
Facets:
Source sentences:
text: Protactinium is an actinide which is positioned in the periodic table to the left of uranium and to the right of thorium, and many of its physical properties are intermediate between those two actinides.
text: Protactinium is an actinide which is positioned in the periodic table to the left of uranium and to the right of thorium, and many of its physical properties are intermediate between those two actinides.
text: Protactinium is an actinide which is positioned in the periodic table to the left of uranium and to the right of thorium, and many of its physical properties are intermediate between those two actinides.
text: Protactinium is an actinide which is positioned in the periodic table to the left of uranium and to the right of thorium, and many of its physical properties are intermediate between those two actinides.
text: Protactinium is an actinide (Z=91; atomic mass 231.0359); it name derives from protos (Greek for first) and actinium, because it most abundant isotope (231Pa) is parental to 227Ac.