Assertion: bismuth | /r/HasAspect | a rhombohedral biαstructure
Facets:
value: with valence of +3 and +5
type: OTHER
Source sentences:
text: It has a rhombohedral (Biα) structure, with an atomic radius of 1.54 Å, electronegativity of 1.83, and valence of +3 and +5.