Here we're told that Group 3 elements tend to have blank atomic radii and blank ionization energies than group 1A elements. So we're looking at group 3A versus group 1A. So here we would say that atomic radius fits under periodic trend type B, so it decreases as we head towards the top right corner. So as we're going towards the right, we would expect our atomic radius to decrease.

So group 3A elements would have smaller or lower atomic radii than group 1A. So that means the answer's either B or C. Then ionization energy fits under periodic Tron trend type A, which increases as we head towards the top right corner of the periodic table. Here we'd expect a group 3/8 to have a higher ionization energy than group 1A.

This would mean that our final answer would have to be choice B.