Chemistry - PERIODIC TABLE Question with Solution | TestHub
Which of the following is / are incorrectly matched. (I) order (II) Mt element belongs to period group (III) Ionic radius order (IV) order (V) EA order (VI) Acidic strength order (VII) Ionic mobility order (VIII) Size ratio are
Answer:
Solution:
The incorrectly matched statements are I, II, IV, and V. I: IE₂(Cu) > IE₂(Zn), not Cu < Zn. II: Mt is in period 7, group 9, not group 11. III is correct: Li⁺ > Mg²⁺ > Al³⁺ > Be²⁺ in ionic radius. IV is wrong: IE₁ order is Tl > Ga > Al, not Ga > Al > Tl. V is wrong because the cation electron-gain magnitudes follow the corresponding ionization energies, with F⁺ > Cl⁺, not Cl⁺ > F⁺. VI is correct: acidity rises CrO < Cr₂O₃ < CrO₃. VII is correct: hydrated ionic mobility Li⁺ < Na⁺ < K⁺. VIII is correct. Hence, 4 statements are incorrectly matched.
