Assertion: sodium carbonate's sodium | /r/AtLocation | group 1 of the periodic table
Facets:
Source sentences:
text: Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell, which it readily donates, creating a positively charged ion—the Na+ cation.
text: Sodium is an alkali metal, being in group 1 of the periodic table.