- atomic number 91 als zelfstandig naamwoord:
- 1
atomic number 91
zelfstandig naamwoord
1 atomic number 91
A short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead.
synoniemen: Pa, protactinium, protoactinium.
Nederlands: protactinium
Pools: Pa, protaktyn
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