The correct trend in the first ionization enthalpies of the elements in the 3 rd period of periodic — JEE Mains Chemistry Past Papers Chemistry Question
Question
The correct trend in the first ionization enthalpies of the elements in the 3 rd period of periodic table is: (A) Al < Si < S < P < Cl (B) Al < S < P < Si < Cl (C) Si < S < Al < P < Cl (D) S < Si < Al < P < Cl
Answer: A
💡 Solution & Explanation
In general on moving from left to right in a period ionization energy increases as Zeff increases. Al < Si < S < P < Cl (Ionisation energy of phosphorus is more because of half filled stable configuration) ALLEN
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