Assertion: neptunium's mass | /r/HasProperty | high – 57.6 to 75.6 kg
Facets:
value: for 243am
type: TEMPORAL
value: relatively
type: DEGREE
value: for 241am
type: TEMPORAL
value: for 209 kg
type: OTHER
Source sentences:
text: The critical masses of two other readily available isotopes, 241Am and 243Am, are relatively high – 57.6 to 75.6 kg for 241Am and 209 kg for 243Am.