| ⅠA | ⅡA | ⅢA | ⅣA | ⅤA | ⅥA | ⅦA | 0 |
2 | | | | ① | ② | ③ | ④ | |
3 | ⑤ | ⑥ | ⑦ | ⑧ | ⑨ | ⑩ |
原子 | N | S | O | Si |
半径/10-10m | 0.75 | 1.02 | 0.74 | 1.17 |
A.F‑ | B.C1‑ | C.NH3 | D.H2O |
A.酸性H2SO4>H3PO4>HClO4 | B.还原性Na>Mg>Al |
C.氧化性Cl>S>P | D.稳定性HCl>H2S>PH3 |
A.X2-的还原性一定大于Y- |
B.由mXa+与nYb-得,m+a=n﹣b |
C.X、Y一定不是同周期元素 |
D.若X的原子半径大于Y,则气态氢化物的稳定性HmX一定大于HnY |
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