October 2018 1 17 Report
Suatu unsur mempunyai konfigurasi elektron.
K = 2 , L = 8 , M = 18 , N = 8 , O = 1 .
Unsur tersebut mempunyai jumlah netron sebesar 48.
Berapakah nomor atom dan nomor massa unsur tersebut? Tuliskan pula lambang atom yang dimaksud. *pakai caranya (:

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