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physical object > natural object > collection of particles > phase of matter > solid > metal > actinide > protactinium

protactinium comparison table

Subject	has ocean residence time	has occurrence	has ocean oxidation state	is a kind of	has atomic number	has group	has image	has filling orbital	has definition	has ocean concentration
actinide				inner transition metal	89 to 103	a column number in the table of the elements		5f	Element with atomic number between 89 (Actinium) and 103
unclassified oceanic element	unknown	ocean		oceanic element						unknown
protactinium	unknown	ocean	V	unclassified oceanic element	89 to 103	a column number in the table of the elements		5f		unknown

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