A:WX2分子中所有原子最外层都为8 电子结构
B:WX2、ZX2的化学键类型和晶体类塑都相同
C:WX2是以极性键结合成的非极性分子
D:原子半径大小顺序为X <W<Y<Z
下列的水属于纯净物的是()
一 Could you tell me ? I must find him.
一Sorry, I'v no idea. But he was here just now.