The chemical symbol of protactinium is Pa.
Protactinium
The chemical symbol of protactinium is Pa.
Protactinium, with the chemical symbol Pa, is the chemical element with the atomic number 91.
Because the properties (chemical and physical) of protactinium are the general properties of metals.
The atomic number for the element Protactinium (Pf) is 91.
The chemical symbol for Protactinium is Pa.
Protactinium is a natural chemical element; but protactinium can be obtained artificially by nuclear reactions from 232Th.
Protactinium is a natural chemical element; but protactinium can be obtained artificially by nuclear reactions from 232Th.
Protactinium is a natural chemical element, metal, very radioactive.
Protactinium is a natural radioactive chemical element.
The chemical symbol for protactinium is Pa because Pr, Po, and Pt were already taken. Protactinium was discovered in 1913. Praseodymium (Pr, discovered in 1885), polonium (Po, discovered in 1898), and platinum (Pt, known at least since the 1500s) were already discovered and named. The symbol Pa uses the first unused letter (a) in protactinium's name.
Protactinium