protactinium in a sentence

Examples

1. Protactinium exhibits two valence states; the + 5 is stable, and the + 4 state easily oxidizes to protactinium ( V ).
2. Protactinium exhibits two valence states; the + 5 is stable, and the + 4 state easily oxidizes to protactinium ( V ).
3. The thorium-233 beta decays to protactinium-233 and then to uranium-233, which in turn is used as fuel.
4. Protactinium metal can be prepared by reduction of its fluoride with calcium fluoride, lithium or barium at a temperature of 1300 1400 �C.
5. In the thorium cycle, thorium-232 breeds by converting first to protactinium-233, which then decays to uranium-233.
6. The room temperature value for americium is lower than that of neptunium, plutonium and curium, but higher than for uranium, thorium and protactinium.
7. The new element was called brevium due to the short half-life of the isotope specific studied, Protactinium-234 ( 234 Pa ).
8. The complex chemical behavior of protactinium is a consequence of the start of the filling of the 5 " f " shell in this element.
9. Thorium's melting point of 1750 �C is above both that of actinium ( 1227 �C ) and that of protactinium ( approximately 1560 �C ).
10. Different isotopes of protactinium were identified in Germany in 1913 and in 1918, but the name " protactinium " was not given until 1948.