试题与答案

下表是Na、Mg、Si、S、Br五种元素的单质的沸点,其中b、e均是热和电的良导

题型:填空题

题目:

下表是Na、Mg、Si、S、Br五种元素的单质的沸点,其中b、e均是热和电的良导体。

单质abcde
沸点(℃)58.8882.9444.72 3551 107
(1) a的元素在元素周期表中的位置为________。

(2) 写出d的元素原子的电子式________;其最高价氧化物形成的晶体为________晶体(填类型),溶于强碱的离子方程式为________________________________________。

(3) c与氢形成的分子X的空间构型为________;写出X的水溶液与足量b元素的最高价氧化物对应水化物反应的离子方程式___________________________________。

(4) 上述元素所能形成的简单离子中半径最小的是________(填离子符号),最高价氧化物对应水化物酸性最强的是________(填分子式),e元素与N元素形成化合物的电子式为____________________________。

(5) b元素与氯元素形成的化合物Y的晶体中,1个晶胞内含有的基本微粒及个数是________。

答案:

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