Na,e 20 elements and compounds


​​​​​​I think you want to ask the names of 20 elements and compounds.
Serial No. Name of element Name of compound
1 Hydrogen (H) water (H2O)
2 Helium(He) No compound
3 Lithium (Li) Lithium oxide (Li2O)
4 Beryllium (Be) Beryllium oxide(BeO)
5 Boron(B) Boric acid (H3BO3)
6 Carbon(C) Carbon dioxide (CO2)
7 Nitrogen(N) Ammonia(NH3)
8 Oxygen(O) Water(H2O)
9 Fluorine(F) Hydrogen Fluoride(HF)
10 Neon(Ne) No compound
11 Sodium(Na) Sodium oxide(Na2O)
12 Magnesium(Mg) Magnesium oxide (MgO)
13 Aluminium(Al) Aluminium trioxide (Al2O3)
14 Silicon(Si) Silicon dioxide(SiO2)
15 Phosphorous(P) Phosphine(PH3)
16 Sulphur(S) Sulphur dioxide (SO2)
17 Chlorine(Cl) Hydrochloric acid(HCl)
18 Argon(Ar) Sulphur trioxide argon (SO3Ar)
19 Potassium(K) Potassium oxide(K2O)
20 Calcium(Ca) Calcium oxide (CaO)


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