Assertion: fluorine | /r/AtLocation | period
Facets:
Source sentences:
text: The periods are the rows, and the groups are the columns, so Fluorine, F, is in Period 2 (and Group 7).
text: The periods are the rows, and the groups are the columns, so Fluorine, F, is in Period 2 (and Group 7).
text: The periods are the rows, and the groups are the columns, so Fluorine, F, is in Period 2 (and Group 7).