It is clear that the core is subject to change
K because parent atoms are always larger than their cations(positively charged atoms)
3Mg + N₂ = Mg₃N₂
Mg₃N₂
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We found cesium, strontium, aluminum, sulfur, chlorine, and fluorine on the periodic table. Cesium is the farthest left and the lowest, while fluorine is the farthest right and the highest, so we know they have the highest metallic character and the lowest metallic character, respectively.