③最后三种元素性质缓慢地递变 (d区、f区插入) K+ Ca2+ Ga3+ Ge4+ As r/pm13399 62 5347 Rb+ Sr2+ In3+ Sn+ Sb5+ 机邵学电國图 r/pm148113817162 Cst Ba2+ T1+ Pb4+ Bi5+ rpm16913595 8474③最后三种元素性质缓慢地递变 K+ Ca2+ Ga3+ Ge4+ As5+ r/pm 133 99 62 53 47 Rb+ Sr2+ In3+ Sn4+ Sb5+ r/pm 148 113 81 71 62 Cs+ Ba2+ Tl3+ Pb4+ Bi5+ r/pm 169 135 95 84 74 (d区、f 区插入)