有X、Y、Z、W、M五种短周期元素，其中X、Y、Z、W同周期，Z、M同主族；X＋与M2－具有相同的电子层结构；离子半径：Z2－＞W－；Y的内层电子总数是最外层电子数的5倍。下列说法中不正确的是
| A．W、M的某种单质可作为水处理中的消毒剂 |
| B．电解YW2的熔融物可制得Y和W的单质 |
| C．相同条件下，W的氢化物水溶液酸性比Z弱 |
| D．X、M两种元素形成的一种化合物与水反应可生成M的某种单质 |
相关试题
It’s high time you had your hair cut ; it’s getting _______ . 
| A．too much long | B．much too long |
C．long too much | D．too long much |
My friend showed me round the town, ______ was very kind of him. 
| A．which | B．that | C．where | D．it |
They use computers to keep the traffic _______ smoothly.
| A．being run | B．run | C．to run | D．running |
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |
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