试题与答案

(13分)X、Y、Z和W代表原子序数依次增大的四种短周期元素,它们满足以下条件:

题型:填空题

题目:

(13分)X、Y、Z和W代表原子序数依次增大的四种短周期元素,它们满足以下条件:

①元素周期表中,Z与Y相邻,Z与W也相邻;

②Y、Z和W三种元素的原子最外层电子数之和为17。

请填空:(1)Y、Z和W三种元素是否位于同一周期(填“是”或“否”):     ,理由是____________________________;

(2)Y是      ,Z是     ,W是                       ;

(3)X、Y、Z和W可组成一化合物,其原子个数之比为8∶2∶4∶1。写出该化合物的名称及化学式                          

答案:

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