Question:
In second period, X has second lowest first ionization enthalpy and Y has second highest. Identify X and Y.
In second period, X has second lowest first ionization enthalpy and Y has second highest. Identify X and Y.
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Ionization enthalpy increases across a period and decreases down a group.
Updated On: May 19, 2025
- B, F
- Be, Ne
- Be, O
- C, O
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The Correct Option is A
Solution and Explanation
Second lowest IE: B (after Li),
Second highest IE: F (after Ne)
Therefore, X = B and Y = F.
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