Assertion: rutherfordium's hafnium | /r/ObjectUse | used in control rods
Facets:
value: for nuclear reactors
type: PURPOSE
Source sentences:
text: Therefore, zirconium (mostly as zircaloy) is used as cladding of fuel rods in nuclear reactors, while hafnium is used in control rods for nuclear reactors, because each hafnium atom can absorb multiple neutrons.