Electronic configuration from 1-20 with valency and valence electron
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VALENCY OF FIRST 20 ELEMENTS WITH THEIR SYMBOL
Hydrogen[H]-valency- 1Helium[He]-valency-0[noble gas]Lithium[Li]-valency-1Beryllium[Be]-valency-2Boron[B]-valency-3Carbon[C]-valency-4[it is a tetravalent element]Nitrogen[N]-valency-3Oxygen[O]-valency-2Fluorine[F]-valency-1Neon[Ne]-valency-0[noble gas]Sodium[Na]-valency-1Magnesium[Mg]-valency-2Aluminium[Al]-valency-3Silicon[Si]-valency-4[metalloid]/semi conductorPhosphorus[P]-valency-3Sulphur[S]-valency-2Chlorine[Cl]-valency-1Argon[Ar]-valency-0[noble gas]Potassium[K]-valency-1Calcium[Ca]-valency-2
Hydrogen[H]-valency- 1Helium[He]-valency-0[noble gas]Lithium[Li]-valency-1Beryllium[Be]-valency-2Boron[B]-valency-3Carbon[C]-valency-4[it is a tetravalent element]Nitrogen[N]-valency-3Oxygen[O]-valency-2Fluorine[F]-valency-1Neon[Ne]-valency-0[noble gas]Sodium[Na]-valency-1Magnesium[Mg]-valency-2Aluminium[Al]-valency-3Silicon[Si]-valency-4[metalloid]/semi conductorPhosphorus[P]-valency-3Sulphur[S]-valency-2Chlorine[Cl]-valency-1Argon[Ar]-valency-0[noble gas]Potassium[K]-valency-1Calcium[Ca]-valency-2
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