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names of first 20 elements and their valencies and specify that it is cathode or anode |
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Answer» 1 - H - Hydrogen2 - He - Helium3 - Li - Lithium4 - Be - Beryllium5 - B - Boron6 - C - Carbon7 - N - Nitrogen8 - O - Oxygen9 - F - Fluorine10 - Ne - Neon11 - Na - Sodium12 - Mg - Magnesium13 - Al - Aluminum14 - Si - Silicon15 - P - Phosphorus16 - S - Sulfur17 - Cl - Chlorine18 - Ar - Argon19 - K - Potassium20 - Ca - Calcium Elements can act as cathode or anode depending on the other electrode. |
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