1.

Write first 30 elements​

Answer»

enHeHeliumLiLithiumBeBerylliumBBoronCCarbonNNitrogenOOxygenFFluorineNeNeonNaSodiumMgMagnesiumAlAluminumSiSiliconPPhosphorusSSulfurClChlorineArArgonKPotassiumCaCalciumScScandiumTiTitaniumVVanadiumCrChromiumMnManganeseFeIronCoCobaltNiNickelCuCopperZnZinc



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