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

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

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Question 28

A newly synthesized heavy metal, Novium (Nv\text{Nv}Nv), is analyzed using a mass spectrometer. The sample is found to consist of only two isotopes.

Table 1 shows the mass numbers and percentage abundances of these two isotopes:

IsotopeMass numberPercentage abundance (%)
286Nv^{286}\text{Nv}286Nv28624.3
289Nv^{289}\text{Nv}289Nv28975.7

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

Give your answer to 1 decimal place.

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

  1. GCSE
  2. /Chemistry
  3. /1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

41 exam-style questions on AQA GCSE Chemistry 1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, covering 1.1.1 Atoms, elements and compounds, 1.1.2 Mixtures, 1.1.3 The development of the model of the atom (common content with physics), 1.1.4 Relative electrical charges of subatomic particles, 1.1.5 Size and mass of atoms, 1.1.6 Relative atomic mass, and 1.1.7 Electronic structure. Each one has a worked solution and a mark scheme showing where the marks go.

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