Question

The natural isotopic abundance of20Ne is 90. 92% 21 Ne is 0.26% &22Ne is 8.82% The exact isotopic masses are 19.99 24 20.9940 u & 21.9914 respectively calculate average atomic mass of neon​

Answer 1

Answer:

Use the formula

average atomic mass = [(Z1 × %age ) + (Z2 × %age ) + (Z3 × %age )] /100

By putting the values

average atomic mass = [(20×90.92) + (21×0.26) + (22×8.2)] / 100

By calculating the values

average atomic mass = 20.04

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Explanation: