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The three stable isotopes of neon: ""(10...

The three stable isotopes of neon: `""_(10)^(20)Ne,""_(10)^(21)Ne and ""_(10)^(22)Ne` 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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20.18 u
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