Question:
Which of the following statements are correct?
Which of the following statements are correct?
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Always verify electron gain enthalpy and other properties of elements from the periodic table to check such statements.
Updated On: May 15, 2025
- I, III, IV only
- II, IV only
- I, III only
- I, II, III, IV
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The Correct Option is D
Solution and Explanation
- Statement I is correct, as P has the least negative electron gain enthalpy among P, S, Cl, and F.
- Statement II is correct because the lanthanoid contraction is not observed in Eu, Yb.
- Statement III is correct since Ce(OH)$_3$ is most basic among lanthanoid hydroxides.
- Statement IV is correct as the radii of Na and Na$^+$ are 95 pm and 186 pm respectively.
- Statement II is correct because the lanthanoid contraction is not observed in Eu, Yb.
- Statement III is correct since Ce(OH)$_3$ is most basic among lanthanoid hydroxides.
- Statement IV is correct as the radii of Na and Na$^+$ are 95 pm and 186 pm respectively.
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