Assertion: bismuth | /r/HasAspect | atomic number
Facets:
Source sentences:
text: Bismuth is a chemical element that has the symbol Bi and atomic number 83.
text: Bismuth, which has the atomic number 83, was once considered to be the heaviest element to exist in nature, but later it was found out that bismuth-209 exhibited radioactivity and had unstable properties which thereby decays into thallium-205.It is used in automatic fire sprinkler systems, fire detection systems, electrical fuses, curing gastric ulcers and to make permanent magnets.