Worksheet: Density, Atomic and Ionic Radii

Rank the following ions from smallest to largest: Mg2+, Al3+, P3-, O2-. Al3+ < Mg2+ < O2- < P3-What is the most reactive metal in the periodic table? Francium. What is the most reactive nonmetal in the periodic table? Fluorine. What is the shielding effect? Energy levels between the nucleus and the outer level electrons block (shield) ................
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