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（12分）下表为元素周期表的一部分，请参照元素①－⑧在表中的位置，用化学用语回答下列问题： （1）④、⑤、⑥的原子半径由大到小的顺序为___________________。 （2）②、③、⑦的最高价含氧酸的酸性由强到弱的顺序是____________。 （3）①、④、⑤、⑧中的某些元素可形成既含离子键又含极性共价键的化合物，写出其中一种化合物的电子式：____________________。 （4）由表中两种元素的原子按1：1组成的常见液态化合物的稀液易被催化分解，可使用的催化剂为（填序号）_________________。 a.MnO 2 b.FeCl 3 c.Na 2 SO 3 d.KMnO 4 （5）由表中元素形成的常见物质X、Y、Z、M、N可发生以下反应： X溶液与Y溶液反应的离子方程式为_____________________， N→⑥的单质的化学方程式为________________。
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Any unemployed people counts as deserving government help.
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相关题目：
【单选题】应变 γ x y 的物理含义是原微元的直角在变形后
A.
与x轴的夹角变化
B.
与y轴的夹角变化
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【单选题】下列哪项不是传动系的组成元件
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B.
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【单选题】According to the passage, which of the following marriages is usually counted as an international one?
A.
A Canadian man marries a Canadian woman in New Zealand.
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D.
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查看完整题目与答案
【判断题】Excel中选定区域的右下角有一个小黑方块,称之为“填充柄”。()
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查看完整题目与答案
【单选题】Which one is counted in US GDP?
A.
The gourmet meals produced by a fine home chef
B.
The purchase of a plot of land
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查看完整题目与答案
【单选题】下列哪项不是传动系的组成元件（）。
A.
离台器
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查看完整题目与答案
【单选题】如果在学前儿童时期,甲状腺 激素 分泌不足,会得( )。
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呆小症
B.
甲亢
C.
侏儒症
D.
巨人症
查看完整题目与答案
【单选题】1 Which of the following is true according to the passage?
A.
a. There are one million millionaires in the world today.
B.
b. A millionaire’s house should not be counted with his financial assets.
C.
c. Most millionaires inherited their wealth from their parents.
查看完整题目与答案
【多选题】Which of the following is the correct English equivalent of "失业人员都应该得到政府的帮助。" There are may be more than one correct sentencce.
A.
Anyone who has lost his job counts as deserving government help.
B.
Any unemployed person counts as deserving government help.
C.
Any unemployed people counts as deserving government help.
D.
Anyone who has lost his job should be counted as deserving government help.
查看完整题目与答案