DP Chemistry (first assessment 2025)

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Question SPM.1A.HL.TZ0.7

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.HL.TZ0.7
Level HL Paper 1A Time zone TZ0
Command term Question number 7 Adapted from N/A
7.
[Maximum mark: 1]
SPM.1A.HL.TZ0.7

In which group of ions and molecules are electrons delocalized in all species?


A.  CH3COOH, O3, C60

B.  CH3COO−, NO2−, C(graphite)

C.  C2H2, (COOH)2, C(diamond)

D.  C2H4, NO2+, SiO2

[1]

Markscheme

B