现有部分常见元素的性质或原子结构如下表：

（2）写出元素Z组成的这种单质的一种用途______．

（3）元素W可形成一种单质，其式量为256，该单质的化学式为______．

Wen Genying was born in 1987 in South Korea. She is a very f _小题1:_ actress. She has many fans all over the w _小题2:_. She likes to p _小题3:__ the piano and read comic books when she is f _小题4:__. And she is good at swimming and dancing. She has a h _小题5:__ family. Her grandmother helps her a lot w_小题6:_ her acting and teaches her Japanese. She often helps    p __小题7:__ people and gives away some m _小题8:_ to the people in n __小题9:__. She also sets up a Wen Genying Scholarship(奖学金) for s __小题10:__. I think we should learn from her.