Brevium
Related Category: Compounds and Elements
see
protactinium.
More on Brevium
Protactinium - radioactive chemical element; symbol Pa; at. no. 91; at. wt. 231.0359; m.p. greater than 1,600°C;; b.p. 4,026°C;; sp. gr. 15.37 a fluoride a dioxide and a pentoxide (Pa
2O
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