What is the size of a Sulfate ion? In terms of nanometers, what would the size be of an individual sulfate ion in solution?

Would its size exceed 0.5 nm? Enough to displace something that is held together with a gap of 0.35 nm?
The radius of a sulfate ion is  0.242 +/- 0.007 nm. (Yirhak Marcus. Chem. Rev. 1988, 88, 1475-1498.)
In order to know if it would displace something could you tell us what exactly you are trying to displace?