题目

Charles Chaplin was born in London on April 16, 1889. His parents were music hall actors. The Chaplin family were very poor, and life was difficult in London. Charlie, as he was called, used to do his mother's job in the theatre when she was ill. When he was only 17 years old, Chaplin got his first real job as an actor. What he did was to do silly things to make people laugh in the theatre. Seven years later he went to the USA. And over the next four years, he formed his own way of art. He developed the character (~J ~, )of a homeless gentleman which became very popular. From the 1920s to the 短周期元素X、Y、Z在周期表中的位置关系如下图所示,据此回答下列问题: (1)X元素形成单质的化学式是　　　　　　　; (2)写出Y元素形成的单质与水反应的化学方程式　　　　　　　　　; (3)写出单质Z与钠反应的化学方程式　　　　　　　　　　　　。