The answer is 5. Sulfur, iron, copper, gold, and aluminum are elements.
<span>Acetochlor demonstrates characteristics associated with chemicals that have been detected in groundwater. To protect groundwater from contamination, acetochlor product labels restrict the use of acetochlor on porous soils over shallow groundwater:</span>
C because ships and other boats has underwater microphones underwater because on most cargo ships the engine is to loud so they use microphones underwater to detect torpedos so your answer is C
Explanation:
use the term electron sheilding, the more electrons between the valence el3ctron and nucleus the easier to lose the valence electron (more sheilding = easier to lose)
1. by making a atomic configuration
2.by making a table of shells of k.l.m.n....
that's all
