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

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Question 15
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Analysis of a metallic meteorite sample reveals a novel element, Z, which exists as two stable isotopes.

The table below shows the mass numbers and percentage abundances of these two isotopes in the meteoritic sample.

Mass numberPercentage abundance (%)
12157.3
12342.7

Calculate the relative atomic mass (ArA_rAr​) of element Z in this sample.

Give your answer to 1 decimal place.

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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