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PR
( 4541 )
Pr
is the official chemical symbol for the metal
praseodymium
.
Pr
in
organic chemistry
is often used unofficially as a symbol for the
propyl
radical.
PR0
PR?
PRA
(329)
PRB
PRC
(2)
PRD
PRE
(926)
PRF
PRI
(1264)
PRL
PRM
PRN
PRO
(1894)
PRP
PRR
(15)
PRS
PRT
(2)
PRU
(64)
PRV
PRW
PRY
(11)
PRZ
(22)
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