Question:
Which of the following is not correct with the property mentioned against them?
Which of the following is not correct with the property mentioned against them?
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Ionization energy increases across a period; exceptions are due to stable configurations.
Updated On: May 12, 2025
- I$^-$>I>I$^+$ : radius
- Li>Be>B : first ionization enthalpy
- Cl>S>P : electronegativity
- Rb>K>Na : screening effect
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The Correct Option is B
Solution and Explanation
Ionization enthalpy increases across a period. The correct trend is: Li<B<Be
Although Be has a filled s-subshell (stable), its ionization enthalpy is higher than B.
Hence, the statement “Li>Be>B” is incorrect. The correct order is: Li<B<Be.
Although Be has a filled s-subshell (stable), its ionization enthalpy is higher than B.
Hence, the statement “Li>Be>B” is incorrect. The correct order is: Li<B<Be.
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