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As you move from right to left on the periodic table the atomic radius fill in the blank

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2