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radon
Rn
frans
Fr
rad
Ra
aktyn
Ac
tor
Th
protaktyn
Pa
uran
U
neptun
Np
pluton
Pu
ameryk
Am
kiur
Cm
berkel
Bk
kaliforn
Cf
einstein
Es
ferm
Fm
mendelew
Md
nobel
No
lorens
Lr
rutherford
Rf
dubn
Db
seaborg
Sg
bohr
Bh
has
Hs
meitner
Mt