protactinium in a sentence

Examples

1. Cranston then published their notes on isotopes, including the new element, Protactinium.
2. Tetravalent protactinium is chemically similar to uranium ( IV ) and thorium ( IV ).
3. Heating the nitrate in air at 400 �C converts it to the white protactinium pentoxide.
4. In hydrides and nitrides, protactinium has a low oxidation state of about + 3.
5. In 1918 he announced discovery of a stable isotope of Protactinium, working with John Arnold Cranston.
6. In 1900 William Crookes isolated protactinium as a radioactive material from uranium which he could not identify.
7. Thus tetravalent protactinium in solutions is obtained by the action of strong reducing agents in a hydrogen atmosphere.
8. Protactinium was first identified in 1913 by Kasimir Fajans and Oswald Helmuth G�hring at the University of Karlsruhe.
9. Protactinium is more abundant ( 10  " 12 % ) in the Earth's crust than actinium.
10. Heating PaP 2 O 7 in air to 1400 �C decomposes it into the pentoxides of phosphorus and protactinium.