DP Chemistry (last assessment 2024)

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Question 22N.1.hl.TZ0.11

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1.hl.TZ0.11
Level hl Paper 1 Time zone TZ0
Command term Determine Question number 11 Adapted from N/A
11.
[Maximum mark: 1]
22N.1.hl.TZ0.11

Which molecule has a tetrahedral molecular geometry?


A.  HNO3

B.  SF4

C.  XeF4

D.  XeO4

[1]

Markscheme

D

Examiners report

Less than half of the candidates were able to identify XeO4 as having a tetrahedral shape and there was a strong link with overall performance. Nitric acid was the most commonly chosen distractor and the fact that XeF4 was the least favoured seems to indicate that students are well aware of its unusual geometry.

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