题目

Doctors say anger can be an very harmful emotion（情绪）unless you learn how to deal with it. They warn that angry feelings can lead to heart disease， stomach problems， headaches， emotional problems and possibly cancer. Anger is a normal emotion that we all feel from time to time. Some people express anger openly in a calm reasonable way. Others burst with anger， losing control of themselves. But other people repress their anger. They cannot or will not express it. For years many doctors thought that repressing anger was more dangerous to a person’s health than expressing it. The(13分)A、B、C、D、E是原子序数依次增大的五种短周期元素。A原子的电子层数与它的核外电子总数相同，A与C、B与 D分别为同主族，B和C的最外层电子数之和与E的最外层电子数相同，A与E形成的化合物化学式为AE，其分子中含18 个电子。请回答下列问题：（1）A元素单质的化学式为 ，D元素的离子结构示意图为_ __。（2）写出C、D、E最高价氧化物对应水化物的化学式 、 、 (用化学式表示)。（3）由B元素形成的单质的结构式可表示为 ___。（4）由A、B、C三种元素形成的化合物的电子式为 ___，这种化合物中所含的化学键类型有 。（5）比较D、E的气态氢化物与HF的稳定性的由强到弱的顺序为 (用化学式表示）。