Assertion: krypton | /r/HasAspect | isotopes of every mass number
Facets:
value: with mass numbers
type: OTHER
Source sentences:
text: Krypton has isotopes of every mass number from 69 through 100; of these isotopes; twenty-five are radioactive and are produced by fission of uranium and by other nuclear reactions .
text: Krypton has isotopes of every mass number from 74 through 95; six, with mass numbers 78, 80, 82, 83, 84, and 86, are stable.