the potassium is least active elemt in activity series
Answers
In chemistry, a reactivity series (or activity series) is an empirical, calculated, and structurally analytical progression[1] of a series of metals, arranged by their "reactivity" from highest to lowest.[2][3][4] It is used to summarize information about the reactions of metals with acids and water, single displacement reactions and the extraction of metals from their ores.
Table Edit
Metal Ion Reactivity Extraction
Caesium Cs Cs+ reacts with cold water electrolysis
Francium Fr Fr+
Rubidium Rb Rb+
Potassium K K+
Sodium Na Na+
Lithium Li Li+
Barium Ba Ba2+
Radium Ra Ra2+
Strontium Sr Sr2+
Calcium Ca Ca2+
Magnesium Mg Mg2+ reacts very slowly with cold water, but rapidly
in boiling water, and very vigorously with acids
Beryllium Be Be2+ reacts with acids and steam
Aluminium Al Al3+
Titanium Ti Ti4+ reacts with concentrated mineral acids pyrometallurgical extraction using magnesium,
or less commonly other alkali metals, hydrogen or calcium in the Kroll process
Manganese Mn Mn2+ reacts with acids; very poor reaction with steam smelting with coke
Zinc Zn Zn2+
Chromium Cr Cr3+ aluminothermic reaction
Iron Fe Fe2+ smelting with coke
Cadmium Cd Cd2+
Cobalt Co Co2+
Nickel Ni Ni2+
Tin Sn Sn2+
Lead Pb Pb2+
Antimony Sb Sb3+ may react with some strong oxidizing acids heat or physical extraction
Bismuth Bi Bi3+
Copper Cu Cu2+ reacts slowly with air
Tungsten W W3+ may react with some strong oxidizing acids
Mercury Hg Hg2+
Silver Ag Ag+
Gold Au Au3+[5][6]
Platinum Pt Pt4+
Going from the bottom to the top of the table the metals:
increase in reactivity;
lose electrons (oxidize) more readily to form positive ions;
corrode or tarnish more readily;
require more energy (and different methods) to be isolated from their compounds;
become stronger reducing agents (electron donors).
Answer:
In chemistry, a reactivity series (or activity series) is an empirical, calculated, and structurally analytical progression[1] of a series of metals, arranged by their "reactivity" from highest to lowest.[2][3][4] It is used to summarize information about the reactions of metals with acids and water, single displacement reactions and the extraction of metals from their ores.
Table Edit
Metal Ion Reactivity Extraction
Caesium Cs Cs+ reacts with cold water electrolysis
Francium Fr Fr+
Rubidium Rb Rb+
Potassium K K+
Sodium Na Na+
Lithium Li Li+
Barium Ba Ba2+
Radium Ra Ra2+
Strontium Sr Sr2+
Calcium Ca Ca2+
Magnesium Mg Mg2+ reacts very slowly with cold water, but rapidly
in boiling water, and very vigorously with acids
Beryllium Be Be2+ reacts with acids and steam
Aluminium Al Al3+
Titanium Ti Ti4+ reacts with concentrated mineral acids pyrometallurgical extraction using magnesium,
or less commonly other alkali metals, hydrogen or calcium in the Kroll process
Manganese Mn Mn2+ reacts with acids; very poor reaction with steam smelting with coke
Zinc Zn Zn2+
Chromium Cr Cr3+ aluminothermic reaction
Iron Fe Fe2+ smelting with coke
Cadmium Cd Cd2+
Cobalt Co Co2+
Nickel Ni Ni2+
Tin Sn Sn2+
Lead Pb Pb2+
Antimony Sb Sb3+ may react with some strong oxidizing acids heat or physical extraction
Bismuth Bi Bi3+
Copper Cu Cu2+ reacts slowly with air
Tungsten W W3+ may react with some strong oxidizing acids
Mercury Hg Hg2+
Silver Ag Ag+
Gold Au Au3+[5][6]
Platinum Pt Pt4+
Going from the bottom to the top of the table the metals:
increase in reactivity;
lose electrons (oxidize) more readily to form positive ions;
corrode or tarnish more readily;
require more energy (and different methods) to be isolated from their compounds;
become stronger reducing agents (electron donors).
Explanation: