题目

A、B、C、D、E、F是原子序数依次增大的短周期主族元素，A、E在元素周期表中的相对位置如图所示，A与氧元素能形成两种无色气体，C是地壳中含量最多的元素，D是地壳中含量最多的金属元素。 (1)C在元素周期表中的位置为________，其简单离子的结构示意图为________________。 (2)AE2的分子式为__________。 (3)C、D、E、F的离子半径由大到小的顺序是___________(填离子符号)。 (4)实验室制取F的单质气体的离子方程式为                               �阅读短文，判断正（T）误（F）。Today is my mother’s birthday. My father and I want to buy(买) some food for her. She likes fruit and corn. My father likes chicken and vegetables. I like hot dogs and hamburgers. We all like noodles and cakes. How happy(高兴) we are!( ) 1.Today is mom’s birthday.( ) 2.Mom likes chicken and corn.( ) 3.Dad like fruit and vegetables.( ) 4.I like hot dogs and hamburgers.( ) 5.We buy some noodles and cakes for mom.