Science, asked by wwwrammanoharg1695, 1 year ago

atomic number of 1 to 20 with their electronic confiquration and vaiency

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Answered by ishanshukla58

Hydrogen ,Helium, Lithium ,beryllium Boron ,carbon, Nitrogen ,Oxygen ,fluorine ,neon ,sodium magnesium, aluminium, Silicon, Phosphorus ,Sulphur chlorine, argan

Answered by Dɪʏᴀ4Rᴀᴋʜɪ

I prefer attachment..❣️....

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