Assertion: actinium | /r/HasAspect | proton
Facets:
Source sentences:
text: It means that Actinium has 89 electrons or protons.
text: Actinium has 89 electrons and protons; the number of neutrons is different for each isotope of actinium.
text: Actinium has 89 electrons and protons; the number of neutrons is different for each isotope of actinium.
text: Actinium has 89 electrons and protons; the number of neutrons is different for each isotope of actinium.
text: Actinium has 89 electrons and protons; the number of neutrons is different for each isotope of actinium.
text: Actinium has 89 electrons and protons; the number of neutrons is different for each isotope of actinium.
text: Actinium has 89 electrons and protons; the number of neutrons is different for each isotope of actinium.