一、经典重现(2016年浙江高考)短周期主族元素X、Y、Z、W的原子序数依次增大,X原子核外最外层电子数是其电子层数的2倍,X、Y的核电荷数之比为3︰4。W-的最外层为8电子结构。金属单质Z在空气中燃烧生成的化合物可与水发生氧化还原反应。下列说法正确的是()A.X与Y能形成多种化合物,一般条件下都能与Z的最高价氧化物的水化物发生反应 First, the classic reproduction (2016 Zhejiang college entrance examination) main elements in the short cycle X, Y, Z, W atomic number increases in order, the X atomic nuclei outermost electron number is its electronic layer 2 times, X, Y The ratio of nuclear charge is 3: 4. The outermost layer of W- is an 8-electron structure. Metal elemental Z in the air combustion compounds generated with water redox reaction. The following statement is correct () A.X and Y can form a variety of compounds, under normal conditions can react with the highest oxide of Z oxide hydrate