noble gas primary subject, 14 assertions
Subgroups 0
Aspects 1
electron configuration 1
HasA 1
high ionization energies 0.25
HasProperty 6
unreactive 0.71
inert 0.60
odorless 0.58
colorless 0.47
nonflammable 0.21
useful 0.16
IsA 2
monatomic gases 0.53
element 0.30
ReceivesAction 5
referred as inert gases 0.37
used in excimer lasers 0.25
dissolved in groundwater 0.25
used in lamp 0.21
discovered 0.20