Could someone please tell me if I am correct on the following???:

Pick the larger species from each of the following pairs.

Sr or Sr^2+
*(I think it is Sr)

N or N^3-
*(I think it is N^3-)

Ni or Ni^2+
*(I think it is Ni)

S^2- or Ca^2+
*(I think it is S^2-)

2 answers

You are correct for the first three. I THINK you are correct on the fourth but check some other sources.
the 4th one was correct as well. Thank you!