Element M reacts with chlorine to form a compound with the formula MCl₂. Element M is more reactive than magnesium and has a smaller radius than barium. This element is . A) Sr B) Be C) K D) Ra E) Na

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Strontium (Sr) is more reactive than magnesium, has a smaller atomic radius than barium, and forms a compound with chlorine with the formula SrCl2.

Element M Reacts with Chlorine to Form a Compound with the Formula