...Titanium Tungsten Uranium Vanadium Xenon f Ytterbium Yttrium Zinc Zirconium Symbol Po K Pr Pm Pa Ra Rn Re Rh Rb Ru Sm Sc Se Si Ag Na Sr S Ta Tc •ft Tb Tl Th Tm Sn Ti W u V Xe Yb V . Zn Zr Atomic weight Valence (209) 39.10 140.91 (145) 231.04...