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which of the following electron configurations belong to an element that is the most chemically reactive
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which of the following electron configurations belong to an element that is the most chemically reactive

User Douglas Reid
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It's Fluorine (non-metal) whose E.C. is 1s2, 2s2, 2p5

& Cesium (metal) whose E.C. is [Xe] 6s1

User Dantje
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