These models show the electron structures of two different nonmetal elements. element 1 at left has a purple circle at center with 2 concentric black lines around it. the first line has 2 small green balls on it. the second line has 8 small green balls on it. element 2 at right has a purple center with 5 concentric circles around it, with the first circle innermost. the first circle has 2 small green balls on it, and the second circle has 8 small green balls on it. the third circle has 18 small green balls on it, and the fourth circle has 18 small green balls on it. the fifth circle has 6 small green balls on it. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.