Assertion: actinium's isotope | /r/HasAspect | differing physical properties
Facets:
value: slightly
type: DEGREE
Source sentences:
text: Different isotopes of thorium are chemically identical, but have slightly differing physical properties: for example, the densities of pure 228Th, 229Th, 230Th, and 232Th are respectively expected to be 11.5, 11.6, 11.6, and 11.7 g/cm3.