Protactinium

created by whort

(thing) by whort (6.4 y) (print) ? (I like it!) Sat Nov 13 1999 at 14:27:01

Protactinium (atomic symbol "Pa", atomic number = 91, atomic weight = 231.0359) is a radioactive rare earth metal, one of the rarest naturally-occurring elements. It is an alpha emitter and requires precautions while handling.

(thing) by SSMark82 (1.8 y) (print) ? (I like it!) Wed Dec 13 2000 at 0:36:02

Protactinium
Symbol: Pa
Atomic Number: 91
Atomic Weight: 231.0359
Boiling Point: 4300 K
Melting Point: 1845 K
Density at 300K: 15.4 g/cm³
Covalent radius: ???
Atomic radius: ???
Atomic volume: 15.0 cm³/mol
First ionization potental: 5.88 V
Specific heat capacity: ??? Jg^-1K^-1
Thermal conductivity: 47 Wm^-1K^-1
Electrical conductivity: 5.6*10⁶Ω^-1m^-1
Heat of fusion: ??? kJ/mol
Heat of vaporization: ??? kJ/mol
Electronegativity: 1.5 (Pauling's)

Thorium	Otto Hahn	PA	Uranium
Promethium	Lise Meitner	thorium reactor	perilune
transuranic	DET	Q	Discovery of the Lanthanides and Actinides
atomic	Radium	Periodic Table of the Elements	Enigma

Y'know, if you log in, you can write something here, or contact authors directly on the site. Create a New User if you don't already have an account.

Login
Password

TheOrientalAfrican
ToTheGuyWithAidsSittingN... (I Am Really Really Sorry)	(person)
Heitah
Why I love Everything2	(person)
trixingee
Dungeon Mastering for the first time	(idea)
Netrat0
It's Called Subtext, Honey	(person)
eyeofthebeholder
The Dragon	(idea)
Heitah
consist, comprise, constitute, or compose	(idea)
Meezzio
Gotlandssnus	(thing)
argv
Astral Plane	(idea)
Madara
One Winged Angel	(fiction)
Tom Rook
Talk is cheap	(poetry)
shaogo
Adelle Davis	(person)
Aerobe
race car g sfjsgsd	(poetry)
Binah
Dream Log: July 5, 2008	(dream)
StrawberryFrog
Forgotten things in space	(idea)
antigravpussy
velvet revolution fairy tale	(idea)

This affordable entertainment brought to you by The Everything Development Company