Question

Neon has three isotopes 20Ne accounts for 90.9%, 21Ne accounts for 0.3% and the last 8% is 22Ne. what is the relative atomic mass of neo?​

Answer 1

Answer:

20.003

Explanation:

$Ar$ = [90.9 x 20$Ne$] + [6.3 x 21$Ne$] + [8 x 22] / 100

    = 1818 + 6.3 + 176 / 100

    = 2000.30/100

    = 20.003

∴ average relative atomic mass of neon by given data = 20.003