IB skill practice

Interpret mass spectra and isotope patterns

Paper 1, Paper 2 5 marks Difficulty 4

Relative atomic mass from mass spectrum

A mass spectrum in a Melbourne HL chemistry seminar has peaks at \(63\) with \(63\%\) abundance and \(65\) with \(37\%\). Calculate relative atomic mass. Enter the answer and choose the interpretation that matches the chemistry.

Worked practice: chemistry evidence and answer

Use the chemical evidence first, then enter the result and interpretation that match it.