Assertion: iron's form | /r/HasProperty | different
Facets:
Source sentences:
text: Iron is allotropic—that is, it exists in different forms.
text: Iron has four different allotropic forms, which means that it has four different structural forms in which atoms bond in different patterns, according to Los Alamos National Laboratory.
text: Iron has four different allotropic forms, which means that it has four different structural forms in which atoms bond in different patterns, according to Los Alamos National Laboratory.
text: Iron is commonly found in four different forms: powdered iron, iron blue, black iron oxide and radioactive iron.
text: Iron is found in two different forms; heme iron and non-heme iron.