Hence, the upper part of the series contains powerful reducing agents as they are easily oxidized, and corrode easily. The reducing power of the metals decreases as we move from the top of the table to its bottom.The top of the reactivity series comprises the most reactive elements, which are not available in nature in the free state and the bottom of the series includes the least reactive elements.Here are the salient features of the reactivity series: Salient Features of the Reactivity Series However, metals from Zinc to Mercury can be easily extracted by reducing their oxides, which is comparatively cheaper. Electrolysis is used to extract metals that are placed higher in the reactivity series.On the other hand elements such as magnesium, iron, and aluminium react with steam to form oxides and hydrogen gas. Due to their high reactivity, Potassium, Sodium, Lithium, and, Calcium reacts with cold water to form hydroxides and hydrogen gas.But, different metals have different reactivities toward oxygen such as gold, which is an unreactive metal and doesn’t readily form oxides when exposed to air. Most of the metals react with oxygen to form metal oxides.Higher ranking metals generally show a more metallic nature than that placed lower in the series.The higher the metal placed in the series, the more reactive it is and the more strongly it reacts with water, oxygen, and acid.Reactivity series can be used to predict if a metal can displace another in a single displacement reaction.Join Seneca to get 250+ free exam board specfic A Level, GCSE, KS3 & KS2 online courses.Reactivity series of metals, also referred to as the activity series, is the arrangement of metals in the descending order of their activities. Want to learn more about Reactivity Series? Because of this, the metal has to be extracted from the ore (rock) where the metal compound is found. Most metals are only found as compounds because the metal has reacted with other elements in the past. Most metals react with dilute acids to produce a salt and hydrogen gas. Potassium, sodium and lithium all react quickly with cold water to produce a metal hydroxide and hydrogen gas. ![]() ![]() Platinum, however, is less reactive than copper and so cannot displace copper from a copper sulfate solution. Magnesium + copper sulfate → magnesium sulfate + copper Magnesium is more reactive than copper, so magnesium can displace copper from a copper sulfate solution to create magnesium sulfate. A displacement reaction happens when a more reactive metal (one that forms positive ions more easily) displaces a less reactive metal from a compound. This is called a displacement reaction.Ī metal can only displace another metal from a compound if it is located above it in the reactivity series. These are called native metals.Ī more reactive metal (one that forms positive ions more easily) can displace a less reactive metal from a compound. Very unreactive metals, such as gold and platinum, are found in the Earth’s crust as pure metals. Metals can be arranged in order of their reactivity. The easier it is for a metal to form its positive ion, the more reactive the metal is. When metals react with other substances, the metal atoms always form positive ions.
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