PROMETHIUM

IN DEPTH INFO

• Symbol = Pm
• Atomic = 61
• Particles = 61p+, 84no, 61e-
• Atomic mass = 144.92amu & density = 7.2 g/cm2
• Melting&Boiling point = Mp:1042c, 3000c

WHAT IT IS

• A radioactive element
• Very rare to earth
• Exists in other galaxies
• Is an inner-transition metal
• Is a split of 2 elements(60 & 62)

ITS PAST

• Used in lightbulbs
• Once proven radioactive removed
• Also used in compasses(solid)

WHAT ITS USED FOR

• Could make a nuclear powered battery
• Could also make portable x-rays
• Used in some lights for its natural luminescence
• Also used in guided missles
• Could be used in spaceships

INTERESTING FACTS

• Only found by uranium fission
• Experiments halted & discredited during WW-I-II
• Was finally proven in 1945(Jacob A. Marinsky)
• Has a half life of 17.7 years
• Decays into promethium 147, a half life of 375 years

MORE FACTS

• Named after greek god
• Is man made
• Looks a lot like a rock
• Forms in other galaxies naturally

EVEN MORE!!

• Is only rare earth metal thats radioactive
• 29 isotopes, all different characteristics
• Has been named Florentine and illinium
• last of lanthanide elements discovered