A main-group element 'M' exhibits the following successive ionization energies (in kJ/mol): , , . Wh — Periodic Table and Periodicity Chemistry Question
Question
A main-group element 'M' exhibits the following successive ionization energies (in kJ/mol): $IE_1 = 520$, $IE_2 = 7300$, $IE_3 = 11800$. What is the most probable formula of the stable binary chloride formed by this element?
Answer: A
💡 Solution & Explanation
There is a massive, sudden jump between $IE_1$ and $IE_2$, indicating the element has exactly 1 valence electron and forms a stable $+1$ cation. It belongs to Group 1 and forms $MCl$.
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