Physics, asked by StarTbia, 1 year ago

Obtain the average atomic mass of neon. Refer image for question and equation.

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Answered by abhi178
2
Given,
atomic mass of ^{20}_{10}Ne = 19.99u
abundance = 90.51 %

atomic mass of ^{21}_{10}Ne = 20.99u
abundance = 0.27 %

atomic mass of ^{22}_{10}Ne = 21.99u
abundance = 9.22 %


average atomic mass = (19.99 × 90.51 + 20.99 × 0.27 + 21.99 × 9.22)/100

= (1809.2949 + 5.6673 + 202.7478)/100

= 2017.71/100

= 20.1771u
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