Skip to content

Course home

2.1 Atomic structure

2.1 Atomic structure

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576
Question 43

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]
Markscheme

2.1 Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /2.1 Atomic structure

87 exam-style questions on Edexcel GCSE Chemistry 2.1 Atomic structure, covering 2.1.1 Development of the atomic model, 2.1.2 Structure of the atom and subatomic particles, 2.1.3 Mass number, isotopes and relative atomic mass, and 2.1.4 Calculating relative atomic mass from isotopic abundance. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank