Look at WIKIPEDIA. 

Dear Dr Alexander J. Babchin, I have gone throgh WIKIPEDIA, But I could not find the exact value of Au-(minus) ion radius. If you know any article or book or some data please let me know

Hi, Alexander! There are only three (!) verifiable values of Au ionic radii determined from known crystal structures: Au(+) (CN = 6) - 137 pm, Au (3+) (CN = 4) - 64 pm and Au (3+) (CN = 6) - 85 pm. Certainly, in plasma we can see Au (-) as well..., but this another story!

Dear Doctor A. Kavala! Please let us know why you need the ionic radius of gold, and with what degree of accuracy.

Of course, I was referring to the anionic radius of gold, but the question about the accuracy of its value remains.