Assertion: deuterium | /r/HasProperty | approximately 0.0156%
Facets:
value: on a mass basis
type: OTHER
Source sentences:
text: Deuterium accounts for approximately 0.0156% (or on a mass basis: 0.0312%) of all naturally occurring hydrogen in Earth's oceans, while the most common isotope (hydrogen-1 or protium) accounts for more than 99.98%.