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Atomic structure

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Question 45

A sample of neon gas is analysed and found to contain three isotopes.

  • 90.5% of the atoms are neon-20
  • 0.3% of the atoms are neon-21
  • 9.2% of the atoms are neon-22

Calculate the relative atomic mass (ArA_rAr​) of neon in this sample. Give your answer to 1 decimal place.

[2]

Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /Atomic structure