Problem: 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) SrB) KC) NaD) RaE) Be

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FREE Expert Solution
  • Use the trends in metal reactivity and atomic radius to determine the identity of M
  • First thing is to analyze the ionic compound that M can form. Notice that upon reaction with Cl, it forms MCl2.
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Problem Details

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) K

C) Na

D) Ra

E) Be