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Alomi elementelor pe ultimul strat 1 Je dou elementele fidrogen, I HE N Stabiliti structura atomica. Nor proton, care au in velisul electronic & eleston т боло Lana 'ou structura octet аш 3 H²= 1 (₁ = 1 принят 3 Mr electronișe configuratia electronica 138 the H 2​

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