问题 问答题

X、Y、Z、Q、E五种元素中,X原子核外的M层中只有两对成对电子,Y原子核外的L层电子数是K层的两倍,Z是地壳内含量最高的元素,Q的核电荷数是X与Z的核电荷数之和,表中E在元素周期表的各元素中电负性最大.请回答下列问题:

(1)X、Y的元素符号依次为______、______;

(2)XZ2与YZ2分子的立体结构分别是______和______,

(3)Q的元素符号是______,它属于第______周期,它的价电子层电子排布式为______,在形成化合物时它的最高化合价为______;

(4)用氢键表示式写出E的氢化物溶液中存在的所有氢键______.

答案

X原子核外的M层中只有两对成对电子,核外电子排布应为1s22s22p63s23p4,为S元素,Y原子核外的L层电子数是K层的两倍,应为C元素,Z是地壳内含量最高的元素,为O元素,Q的核电荷数是X与Z的核电荷数之和,原子序数为24,为Cr元素,E在元素周期表的各元素中电负性最大,应为F元素,则

(1)由以上分析可知,X为S,Y为 C,故答案为:S;C;

(2)SO2中,S和O形成2个δ键,有1个孤电子对,为V形,CO2中,C和O形成2个δ键,没有孤电子对,为直线形,

故答案为:V形;直线形;

(3)Q为Cr,原子序数为24,位于周期表第四周期ⅥB族,价电子层电子排布式为3d54s1,最高化合价为+6价,

故答案为:Cr;四;3d54s1;+6;

(4)HF的水溶液中,F的电负性较大,可与另一分子的HF或水中的H形成氢键,可表示为H-F…H,

故答案为:H-F…H.

完形填空

阅读下面短文并用英语回答问题,交答案与在答题卡相应的位置上(请注意76、77、79和80四个小题后面的词数要求)。

[1] Jean Paul Getty was born in 1892 in Minneapolis, Minnesota. He became a millionaire when he was only 24. His father was wealthy, but he did not help his son. Getty made his millions alone. He made his money from oil. He owned Getty Oil and over 100 other companies. The Fortune magazine once called Getty “the richest man in the world.”

[2]But money _________. He married five times and divorced five times. He had five children but spent little time with them. None of Getty’s children had very happy lives.

[3]Getty loved to make money and loved to save it. In spite of his great wealth, Getty was miser. Every evening, he wrote down every cent he spent that day. He even put pay telephone in the guest’s bedrooms in his house so he could save money on phone bills.

[4] In 1973, kidnappers took his 16-year-old grandson, and demanded a large amount of money for his safe return. Getty’s son asked his father for money to save his child. But Getty refused. The kidnappers were merciless and Getty’s son made repeated requests for help from his father. Finally, Getty agreed to lend the money, but at 4 percent interest.

[5] Getty started a museum at his home Malibu, California. He bought many important and beautiful pieces of art for the museum. When Getty died in 1976, the value of the collection in the museum was $1 billion. He left all his money to the museum. After his death, the museum grew in size. Today it is one of the most important museums in the United States. Getty made a large fortune in his life, but he gave his money to the art world because he wanted people to learn about and love art.

小题1:What is the main idea of Paragraph 1? (no more than 8 words)

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小题2:Fill in the blank in Paragraph 2 with proper words. (no more than 7 words)

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小题3:Explain the underlined sentence in Paragraph3.

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小题4:What did the kidnappers do to Getty’s family (no more than 10 words)

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小题5:What does the author want to tell us about Getty in the last paragraph? (no more than 10 words)

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单项选择题 B1型题