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The three stable isotopes of neon .10Ne^...

The three stable isotopes of neon `._10Ne^(20), ._10Ne^(21)` and `._10Ne^(22)` have respective abundances of `90.51%,0.27%` and `9.22%`. The atomic masses of the three isotopes are `19.99u, 20.99u` and `21.99u` respectively. Obtain the average atomic mass of neon.

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`m(90.51xx19.99+0.27xx20.99+9.22xx22)/(100)=20.18 u`
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RESONANCE-NUCLEAR PHYSICS-Advanced level solutions
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