Assertion: protactinium's oxidation state | /r/HasProperty | unstable
Facets:
Source sentences:
text: As the 6d orbitals of dubnium are more destabilized than the 5d ones of tantalum, and Db3+ is expected to have two 6d, rather than 7s, electrons remaining, the resulting +3 oxidation state is expected to be unstable and even rarer than that of tantalum.