Question

Identify first 20 elements along with their reactivity series

Answer 1

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+
Tungsten W W3+
Mercury Hg Hg2+
Silver Ag Ag+
Gold Au Au3+[5][6]
Platinum Pt Pt4+



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Answer 2

Hey Mate here is your answer
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These are the first 20 elements, listed in order:

1 - H - Hydrogen
2 - He - Helium
3 - Li - Lithium
4 - Be - Beryllium
5 - B - Boron
6 - C - Carbon
7 - N - Nitrogen
8 - O - Oxygen
9 - F - Fluorine
10 - Ne - Neon
11 - Na - Sodium
12 - Mg - Magnesium
13 - Al - Aluminum
14 - Si - Silicon
15 - P - Phosphorus
16 - S - Sulfur
17 - Cl - Chlorine
18 - Ar - Argon
19 - K - Potassium
20 - Ca - Calcium