2024届全国100所名校单元测试示范卷·化学[24·G3DY·化学-LKB-必考-HEB]二试题
(2)H2O;共价(3)HC1O >H2 SO >H2 SiO(4)S2->C1(5)Na[:O:H](6)O=C=O(7)C,HN十2N,0,点槛2C0,◆十3N2+十4H,0*(每空2分)12.(1)A13+;第二周期第VA族(2①871(3)A1(OH)3+OH...
(2)H2O;共价(3)HC1O >H2 SO >H2 SiO(4)S2->C1(5)Na[:O:H](6)O=C=O(7)C,HN十2N,0,点槛2C0,◆十3N2+十4H,0*(每空2分)12.(1)A13+;第二周期第VA族(2①871(3)A1(OH)3+OH...
一H2A十2OH。阳极产生的活性氧能使病毒灭活,则b电极为电源正极,a电极为电源负极。Na2CO,溶液的碱性较弱,不能灭活病毒,灭活病毒的是活性氧,A项错误;用NaCl...
Just then I heard shouting in Italian.That was a little boy out there in the sea!His head popped up,then a wave crashed over him and he disappeared.I...