O-LevelChemistryAtomic Structure5070/11 · May/June 2013 · Q41 Mark

Naturally-occurring bromine has a relative atomic mass of 80 and consists entirely of two isotopes of relative atomic masses 79 and 81. What can be deduced about naturally-occurring bromine from this information only?

ABromine contains the two isotopes in equal proportions.

BBromine has different oxidation states.

CBromine isotopes have different numbers of protons.

DBromine is radioactive.

✓ Correct answer

A: Bromine contains the two isotopes in equal proportions.

Oracle Prep sorts past-paper questions by topic, so you can drill Atomic Structure and see which topics are most likely to come up next.

Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2013 Paper 1 Variant 1, question 4.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content