试题与答案

周期表中前四周期中的六种元素A、B、C、D、E、F原子序数依次增大,已知A原子2

题型:填空题

题目:

周期表中前四周期中的六种元素A、B、C、D、E、F原子序数依次增大,已知A原子2p轨道有3个未成对电子;化合物B2E的晶体为离子晶体,E原子核外的M层中只有两对成对电子;C元素是地壳中含量最高的金属元素;D单质的晶体熔点在同周期形成的单质中是最高的;F2核外各电子层电子均已充满。

根据以上信息回答下列问题:

(1)写出D原子核外电子排布式:____________________________________________。

(2)A、B、C、D的第一电离能由小到大的顺序为________________________________(用元素符号表示)。

(3)B的氯化物的熔点比D的氯化物的熔点________(填“高”或“低”);理由是_______________________________________________________。

(4)E的最高价氧化物分子的空间构型是________,是________(填“极性”或“非极性”)分子。

(5)E、F形成的某种化合物有如图所示的晶体结构:该化合物化学式为________;E原子配位数为________________________________________________。

答案:

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