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Parts of the Elements 7.20 a) Why does the quantum in the what he fc muth tradide, 77 pre dict the atomic radius of a 725 Lin
ins, and gations: (a) Exercises 293 cons, and 7.63 atom: Film the 7.64 won energy of an tron affinity of CORE the first for t
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1)Calcium is more reactive than magnesium beacause calcium is having more bigger size than magnesium.

2) calcium is less reactive than potassium beacuse calcium is placed in second row while potassium is placed in first row.

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