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Suatu unsur X punya 2 isotop stabil X no. massa: 10;no. atom:5(19%) & Xno.massa: 11 ; no. massa:5(81%)

Massa atom relatif ??

Gambar no. 10
Suatu unsur X punya 2 isotop stabil X no. massa: 10;no. atom:5(19%) & Xno.massa: 11 ; no. massa:5(81%) Massa atom relatif ?? Gambar no. 10

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1 Jawaban

  • Ar = % Isotop 1 × massanya + % Isotop 2 × massanya
    = 19/100 × 10 + 81/100 × 11
    = 1,9 + 8,91
    = 10,81

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