Criminal File: Protactinium Elizabeth Coughlin, P.10
Element Name: ​
Protactinium Date of Infraction: ​
January 13, 2016
Offense:​
Throwing Bricks At People
Atomic Symbol:​
Pa
Atomic Number:​
91
Atomic Mass:​
231.03588 Group, Family, Period: ​
Period 7, Lanthanide Class:​
Metal
State at 20ºC:​
Solid
Melting Point: ​
1845 K (1572°C)
Boiling Point:​
Unknown
Color:​
Unknown Discovery Credit: ​
Kasimir Fajans and O.H. Göhring Year Discovered: ​
1913 Where Discovered: ​
America Origin of Name: F​
rom the Greek word for first, protos, and the element actinium, which together mean "the parent of actinium." Obtained: ​
Synthetically Produced Uses:​
Research only Properties (Chemical and Physical): ​
Strong binder Suspicious Activity: ​
Having a half-life of up to 32800 years. References Bentor, Y. (2012). Protactinium. Retrieved January 5, 2016, from http://www.chemicalelements.com/elements/pa.html Jefferson Lab. (2016, January 1). The element protactinium. Retrieved January 5, 2016, from http://education.jlab.org/itselemental/ele91.html