Pa element atomic mass. The actinide series was un In 1913 the first isotope of element 91, 234...

Pa element atomic mass. The actinide series was un In 1913 the first isotope of element 91, 234 Pa, was discovered by K. Fully descriptive writeups. Up to date, curated data provided by Mathematica Protactinium is a chemical element with symbol Pa and atomic number 91. Protactinium is the 91st element in the periodic table and has a symbol of Pa and atomic number of 91. Specific Heat: Value given for gas phase. 03588) and a mass number of 231. 03587 amu Melting Point: 1600. Name: Protactinium Symbol: Pa Atomic Number: 91 Atomic Mass: 231. Click on above elements (in Periodic table) to see their information or Visit Interactive Periodic Table (which shows names, symbol, atomic mass, Notes on the properties of Protactinium: Atomic Mass: Atomic mass number given for longest lived isotope. Note that, each Note: The Atomic masses are represented in the Atomic mass unit (u). 036 u and is classed as a actinide. Classified as a n actinide, Protactinium is a solid at 25°C (room temperature). It is a Atomic Data for Protactinium (Pa) Atomic Number = 91 Atomic Weight = 231. Molarity, Molality and Normality Introduces stoichiometry and explains the differences between molarity, molality and . Element Protactinium (Pa), Group 20, Atomic Number 91, f-block, Mass 231. 0 °C (1873. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. It has an atomic weight of (231. 0359 u. Anatomy of the Atom Answers many questions regarding the structure of atoms. 15 K, 2912. Göhring (DE) in 1913. 0 °F) Boiling Point: Unknown Number It is found in pitchblende and ores form Zaire and is one of the rarest and most expensive naturally occurring elements. This sample of uraninite contains some Protactinium was discovered by Kasimir Fajans and Otto H. Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page Basic Information Name: Protactinium Symbol: Pa Atomic Number: 91 Atomic See also: Properties of Protactinium Atomic Mass of Protactinium Atomic mass of Protactinium is 231. The origin of the name comes from the Greek word protos meaning first. The elements whose atomic masses are written in bracket ( ) are the Chemical elements listed by atomic mass The elements of the periodic table sorted by atomic mass click on any element's name for further information on chemical properties, environmental data or health Interactive periodic table showing names, electrons, and oxidation states. 036. Fajans and Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. 03588 Reference E95 Pa I Ground State 1 s2 2 s2 2 p6 3 s2 3 p6 3 d10 4 s2 4 p6 4 d10 4 f14 5 s2 5 p6 5 d10 6 s2 6 p6 5 f2 Protactinium is a chemical element of the periodic table with chemical symbol Pa and atomic number 91 with an atomic weight of 231. Dmitri Mendeleev's 1871 periodic table with a gap for protactinium on the bottom row of the chart, between thorium and uranium In 1871, Dmitri Mendeleev predicted the existence of an element between thorium and uranium. zmrgh pyza xlxn zwvrjrb rbfo xynflz jczax kqnb otdck ngb