O-LevelChemistryAtomic Structure5070/12 · Oct/Nov 2017 · Q281 Mark

The elements helium, argon and neon are noble gases. Which statement is correct?

AAll these elements have eight electrons in their outer shell.

BArgon is used to react with impurities in the manufacture of steel.

CHelium is used in balloons as it is more dense than air.

DNeon is used in light bulbs to give an inert atmosphere.

✓ Correct answer

D: Neon is used in light bulbs to give an inert atmosphere.

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, Oct/Nov 2017 Paper 1 Variant 2, question 28.

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