colourless and odourless nature of noble gases is a result of their full electron shells, which make them non-reactive, and their monoatomic structure, which prevents them from interacting with other substances to produce colour or odour. This makes them unique among the elements on the Periodic...
some chlorine gas (cl2)was bubbled slowly through a colourless solution of potassium bromide (KBr) what would you observe? 相关知识点: 试题来源: 解析 (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) ...
some chlorine gas (cl2)was bubbled slowly through a colourless solution of potassium bromide (KBr) what would you observe? 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 (iv)1.Alkali metals 2.increases 3.halogens 4.decreases (V) Noble gases (VI) F (VII) NaF补充的...
Out of all the elements known, noble gases such as helium (He), neon (Ne), argon (Ar), krypton (Kr) and xenon(Xe) are the most inert (unreactive) and are present in extremely low concentrations in our atmosphere. Therefore, they are grouped together in a
To determine which of the given gases is heavier than dry air, we need to analyze the molar masses of each gas in comparison to that of dry air.1. Understand Dry Air Composition: - Dry air is primarily composed of nitrogen (
What are the general properties of the d-transition metals? Discuss why Ni(salen) has the intense orange-red color. What type of electronic transition responsible for this color? Explain why some substances dissolve in water while other substances do not. Give examples. Explain why ...
But at high vapor pres‐ sure more vapor enters the cavitation bubble during its formation and the bubble collapse is cushioned and less violent [13]. • Properties of gases: Soluble gases should result in the formation of a larger number of cavitation nuclei, but the greater the solubility...
decreases (V) Noble gases (VI)F (VII) NaF 补充的:you'll see red-brown liquid (Br2) appe aring in the solution. 因为Cl2把Br2给置换出来了 结果一 题目 关于元素周期表的几个英语问题!(iv)The elements in thr first vertical column are called the ___(Alkali metals?)and the reactivity of t...