关于元素周期表的几个英语问题!懂英语和化学的进~
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关于元素周期表的几个英语问题!懂英语和化学的进~
(iv)The elements in thr first vertical column are called the ________(Alkali metals?对吧)and the reactivity of these elements ______________on moving down the column while those in column 7 are called the ______________and the reactivity of these elements ____on moving down the column
(V) elements in the last column are very unreactive and are called the ______(Noble gases)是吗?
(VI) which elements in column 7of the periodic table will react most vigorously with the element sodium(in column 1)?_______________________
(VII) what substance will be formed as a result of the reaction shown im(VI)
___________________.
再来个
some chlorine gas (cl2)was bubbled slowly through a colourless solution of potassium bromide (KBr) what would you observe?
(iv)The elements in thr first vertical column are called the ________(Alkali metals?对吧)and the reactivity of these elements ______________on moving down the column while those in column 7 are called the ______________and the reactivity of these elements ____on moving down the column
(V) elements in the last column are very unreactive and are called the ______(Noble gases)是吗?
(VI) which elements in column 7of the periodic table will react most vigorously with the element sodium(in column 1)?_______________________
(VII) what substance will be formed as a result of the reaction shown im(VI)
___________________.
再来个
some chlorine gas (cl2)was bubbled slowly through a colourless solution of potassium bromide (KBr) what would you observe?
![关于元素周期表的几个英语问题!懂英语和化学的进~](/uploads/image/z/7036241-41-1.jpg?t=%E5%85%B3%E4%BA%8E%E5%85%83%E7%B4%A0%E5%91%A8%E6%9C%9F%E8%A1%A8%E7%9A%84%E5%87%A0%E4%B8%AA%E8%8B%B1%E8%AF%AD%E9%97%AE%E9%A2%98%21%E6%87%82%E8%8B%B1%E8%AF%AD%E5%92%8C%E5%8C%96%E5%AD%A6%E7%9A%84%E8%BF%9B%7E)
(iv)1.Alkali metals
2.increases
3.halogens
4.decreases
(V) Noble gases
(VI) F
(VII) NaF
补充的:you'll see red-brown liquid (Br2) appearing in the solution.
因为Cl2把Br2给置换出来了
2.increases
3.halogens
4.decreases
(V) Noble gases
(VI) F
(VII) NaF
补充的:you'll see red-brown liquid (Br2) appearing in the solution.
因为Cl2把Br2给置换出来了