Assertion: protactinium's number | /r/CapableOf | exhibit various levels of decay
Facets:
value: to become
type: PURPOSE
value: via alpha emission
type: MANNER
Source sentences:
text: Most of the isotopes that are lighter than the most stable one, 237Np, decay primarily by electron capture although a sizable number, most notably 229Np and 230Np, also exhibit various levels of decay via alpha emission to become protactinium.