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The three stable isotopes of neon: "10^2...

The three stable isotopes of neon: `"_10^20 Ne`, `"_10^21Ne` and `"_10^22Ne` have respective abundances of 90.51%, 0.27% and 9.22%. The atomic masses of the three isotopes are 19.99 u, 20.99 u and 21.99 u,respectively. Obtain the average atomic mass of neon.

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