Marie discovers boxes of elements in a storage room.

The boxes do not say which elements they contain, but
they do have information about their locations on the
periodic table. What kind of information would allow
Marie to determine which boxes contain the most reactive
elements? One small sentence for a 9th grader

1 answer

Marie can look for the boxes labeled with elements that are in the far left column (alkali metals) or the far right column (halogens) of the periodic table, as those usually contain the most reactive elements.