【简答题】下表为部分短周期主族元素的相关信息. 元素 相关信息 T T的单质能与冷水剧烈反应,所得强碱性溶液中含有两种电子数相同的阴、阳离子 X X的原子最外层电子数是其内层电子数的三倍 Y 在第三周期元素中,Y的简单离子半径最小 Z T、X、Z组成的36电子的化合物A是家用消毒剂的主要成分 请回答下列问题: (1)Z元素在元素周期表中的位置是第______周期第______族. (2)元素T与X按原子个数...
【单选题】听力原文:W: Hello. Can I help you? M: Yes, er... I am going to see the West End. W: How much time de you have? M: Just one day. W: Well, what do you particularly want to do? M: I want to visit museums, ar...
【单选题】听力原文:W: Hello. Can I help you? M: Yes, er…I am going to see the West End. W: How much time do you have? M: Just one day. W: Well, what do you particularly want to do? M: I want to visit museums, art g...
【单选题】听力原文:W: Hello. Can I help you? M: Yes, …er...I am going to see the West End. W: How much time do you have? M: Just one day. W: Well, what do you particularly want to do? M: I want to visit museums, ar...
【单选题】听力原文:W: Hello. Can I help you? M: Yes, er. . . I am going to see the West End. W: How much time do you have? M: Just one day. W: Well, what do you particularly want to do? M: I want to visit museums, ...