Read the paper: Gold Is Smaller than Silver. Crystal Structures of [Bis(trimesitylphosphine)gold(I)] and [Bis(trimesitylphosphine)silver(I)] Tetrafluoroborate by A. Bayler, A. Schier, G. A. Bowmaker, and H. Schmidbaur (J. Am. Chem. Soc., 1996, 118, 7006-7007). Explain how the authors determined the radii of Ag(I) and Au(I), why they had to go to some effort to accomplish this, and why they believe gold is smaller than silver. How do the radii proposed by the authors for Ag(I) and Au(I) compare to literature values?