August 2018 1 31 Report
1) Podaj liczbę: elektronów, nukleonów, protonów i neutronów, zawartych w podanych atomach; ⁷₃Li ¹⁴₆C ¹⁴₇N ¹⁷₈O ¹₁H ²³₁₁Na ²⁰Ne ₁₂Mg ₁₆S ₁₉K ₃₅Cl
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