[العاب]

سلام عليكم

ممكن تعملوني طريقة حل هالسؤال ؟

(10) An element X, has three stable isotopes:
Mass of Isotope (amu) Percent Abundance (%)
23.985 78.70
24.986 10.13
25.983 11.17
Calculate its average atomic mass
(A) 24.31 amu
(B) 25.00 amu
(C) 23.15 amu
(D) 33.33 amu

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