fallout
radioniobium
thorium-228
radioboron
alpha emitter
radioerbium
nuclear chemistry
radionickel
argutite
radioactive dust
radiotantalum
radioxenon
radiochemistry
actinide series
radiozinc
radioactive disintegration
radioiron
radiooxygen
plutonium bomb
ununtrium
atomic number 113
radiochlorine
nuclear decay
nuclear disintegration
element 113
radiosamarium
Uut
germanic
radiogadolinium
radioactinide
radiocontaminated
radiotracer
radioplatinum
ununpentium
meitnerium
Mt
alpha decay
pluto-
element 109
activate
radioactively
element 115
atomic number 109
Uup
atomic number 115
radionuclide