The newest 6 of 6 written questions. Open one to see it on the real paper.
Which statement describes helium and neon?
See it on the paper →Argon and helium are noble gases. Argon is used in lamps, and helium is used in balloons, as shown in Fig. 8.3. argon helium Fig. 8.3 Identify one property of each element that makes it suitable for the use shown in Fig. 8.3. argon helium
See it on the paper →Explain why argon is unreactive. Use ideas about electronic structure in your answer.
See it on the paper →State one use for argon.
See it on the paper →Explain why the elements in Group VIII of the Periodic Table are unreactive. Use ideas about electronic structure in your answer.
See it on the paper →Explain why argon does not react with sodium. Use ideas about electrons in your answer.
See it on the paper →The focus of the question was to concentrate on electronic structure. Some candidates stated that the outer shell of electrons is full, which makes it unreactive. Incorrect responses included that it is a noble gas, but without any reference to electronic structure, as asked for in the question.
— Examiner report, October/November 2022, 0653/33 Q8(d)(ii) (Cambridge)
Many candidates successfully stated a use for argon. The most widely chosen use of argon was to provide an inert atmosphere in light bulbs.
— Examiner report, February/March 2022, 0653/32 Q8(c)(i) (Cambridge)
The key to the unreactive nature of Group Vlll elements is the complete outer shell of electrons. Many candidates wrote this and gained credit for this point. However, further credit was available if they developed their answer further to say that this configuration is stable. Only a few answers contained this further point.
— Examiner report, February/March 2022, 0653/32 Q8(c)(ii) (Cambridge)
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