Chemistry - PERIODIC TABLE Question with Solution | TestHub

A is correct: Pb has a slightly larger atomic radius and higher IE₁ than Sn. B is false: atomic radius increases Sc < Y < La, but IE₁ decreases Sc > Y > La, so the same order cannot represent both. C is correct: Cl has a larger atomic radius than F and a greater electron-affinity magnitude. D is correct: Pd has a larger atomic radius and higher IE₁ than Ni. Hence, A, C, and D.