A.C>D>B>A | B.D>B>A>C |
C.A>D>C>B | D.B>A>C>D |
A.X元素的氢化物水溶液呈碱性 |
B.气态氢化物的稳定性:Y>Z |
C.最高氧化物对应水化物的酸性:W>Z |
D.阴离子半径从大到小排列的顺序:Y>Z>W |
A.x+5 | B.x-5 | C.x+1 | D.x-1 |
ⅠA | ⅡA | ⅢA | ⅣA | ⅤA | ⅥA | ⅦA | 0 | |
1 | A | | ||||||
2 | | | | D | E | | G | |
3 | B | | C | J | F | | H | I |
A.酸性:H3PO4>H4SiO4>H2CO3 | B.熔沸点:H2O> H2Se > H2S |
C.离子半径:S2->Cl->K+ | D.离子的氧化性:Na+>Mg2+>Al3+ |
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