May 2019 1 133 Report
Neon memiliki 3 isotop, yakni ²⁰Ne, ²¹ Ne, dan ²² Ne. jika diketahui massa atom relatif rata - rata neon 20,19 dan persentase kelimpahan ²¹Ne sebesar 0,3%, kelimpahan isotop ²⁰Ne adalah....

a. 82,5%
b. 85 %
c. 90 %
d. 9,7 %
e. 8,3 %

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