WebMay 19, 2024 · The assertion says that silver chloride turns grey in the presence of sunlight which is true because when silver chloride is exposed to sunlight the silver chloride breaks down into silver and chlorine. The yellowish chlorine gas is released and greyish-white silver metal is left over. Web1. Barrier methods e.g. grease, paint, oil or plastic. ~ surface of metal is coated to protect from conditions. 2. Galvanisation when zinc coats iron to protect. 3. Sacrificial protection. ~ more reactive metal covers surface of less reactive metal => more reactive metal corrodes instead, leaving less reactive metal preserved.
P3: Activity Series of Metals - Chemistry LibreTexts
WebPlatinum is one of the least reactive metals. It has remarkable resistance to corrosion, ... Pure platinum is a lustrous, ductile, and malleable, silver-white metal. Platinum is more ductile than gold, silver or copper, thus being the … http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch9/activity.php economy news today egypt
Displacement reactions guide for KS3 chemistry students - BBC
WebThe most reactive metal is placed at the top of the series, and the least reactive metal is placed at the bottom of the series.The reactivity series of metals is as follows:Potassium (K) > Sodium (Na) > Calcium (Ca) > Magnesium (Mg) > Aluminium (Al) > Zinc (Zn) > Iron (Fe) > Tin (Sn) > Lead (Pb) > Hydrogen (H) > Copper (Cu) > Silver (Ag) > Gold ... WebThe least reactive metal among the following is: A sodium B silver C copper D lead Medium Solution Verified by Toppr Correct option is B) Silver or gold are noble metals and are present at the bottom of reactivity series. So, they are inert in nature and are present in their pure form in nature. They do not react with other metals or mineral acids. WebApr 14, 2024 · Answer. The answer is yes. In general, all the standard hair dyes-- The color, when you see like the fireworks, heavy metals are used in these fireworks because each metal really has a different weight, atomic weight, and burning point. And when they do burn, they emit a wavelength that's unique to them. economy news today international