A metal forms a stable binary chloride of the formula . Which of the following sets of successive io — Periodic Table and Periodicity Chemistry Question
Question
A metal forms a stable binary chloride of the formula $MCl_2$. Which of the following sets of successive ionization enthalpies ($IE_1, IE_2, IE_3, IE_4$ in kJ/mol) best matches this metal?
Answer: B
💡 Solution & Explanation
The formula $MCl_2$ implies a stable $+2$ oxidation state (Group 2 alkaline earth metal). This corresponds to a massive jump between $IE_2$ and $IE_3$. Set B ($1750 \rightarrow 14800$) shows this exact jump.
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