下图是元素周期表的一部分，下列说法正确的是
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
Y |
|
|
|
| X |
|
|
|
|
|
|
|
|
|
|
|
|
Z |
|
|
W |
|
| |
|
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
A．可在灰色区域“甲”中寻找催化剂
B．原子半径：X﹥Y﹥Z
C．气态氢化物的稳定性：Z<W
D．工业上电解X和W化合物的水溶液制备X
粤公网安备 44130202000953号