A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

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Question 27
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A mass spectrometer is used to determine the relative abundances of the isotopes in a sample of neon. The results are shown in the table below.

Relative isotopic massPercentage abundance (%)19.99290.4820.9940.2721.9919.25 \begin{array}{c|c} \text{Relative isotopic mass} & \text{Percentage abundance (\%)} \\ \hline 19.992 & 90.48 \\ 20.994 & 0.27 \\ 21.991 & 9.25 \\ \end{array} Relative isotopic mass19.99220.99421.991​Percentage abundance (%)90.480.279.25​​

Calculate the relative atomic mass (ArA_rAr​) of this sample of neon.

Give your answer to 4 significant figures.

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A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Questions

  1. GCSE
  2. /Chemistry
  3. /A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes