Assertion: tin | /r/AtLocation | the +2 oxidation state
Facets:
Source sentences:
text: Tin fluoride and tin pyrophosphate, in which tin is in the +2 oxidation state, are used in dentifrices.
text: The tin is in its +2 oxidation state.
text: Compounds Tin forms two series of compounds: stannous, in which tin is in the +2 oxidation state, and stannic, in which it is in the +4 state.
text: Tin is in the +2 oxidation state.