Assertion: lr's isotope | /r/AtLocation | the range
Facets:
value: to 258md
type: OTHER
value: from 254md
type: TEMPORAL
Source sentences:
text: The most important and most stable isotopes are in the range from 254Md to 258Md and are produced through bombardment of einsteinium isotopes with alpha particles: einsteinium-253, -254, and -255 can all be used.
text: The two most important isotopes, 256Lr and 260Lr, are both in this range.