A.5:1 | B.6: 1 | C.10:1 | D.11:1 |
A.第三周期第ⅢA族 | B.第二周期第ⅢA族 |
C.第三周期第ⅡA族 | D.第四周期第ⅡA族 |
A.CO2 | B.PCl3 | C.CCl4 | D.NH3 |
A.酸性:HClO4>H3PO4>H2SO4 | B.碱性:KOH>NaOH>Mg(OH)2 |
C.离子半径:O2->F->Cl->Na+ | D.氢化物稳定性:H2S>HF>H2O |
族 周期 | IA | | 0 | |||||
1 | ① | ⅡA | ⅢA | ⅣA | ⅤA | ⅥA | ⅦA | |
2 | | | | ② | ③ | ④ | | |
3 | ⑤ | | ⑥ | ⑦ | | | ⑧ | |
A.酸性:H4SiO4﹤H3PO4﹤H2SO4﹤HClO4 | B.氢化物的稳定性:CH4﹤NH3﹤H2O﹤HF |
C.碱性:KOH﹥Ca(OH)2﹥Mg(OH)2 | D.沸点:HI﹥HBr﹥HCl﹥HF |
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