DP Chemistry (last assessment 2024)

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Question 22N.1.hl.TZ0.6

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1.hl.TZ0.6
Level hl Paper 1 Time zone TZ0
Command term State Question number 6 Adapted from N/A
6.
[Maximum mark: 1]
22N.1.hl.TZ0.6

Which best explains why complexes of d-block elements are coloured?


A.  Light is absorbed when electrons are promoted between d orbitals.

B.  Light is emitted when electrons are promoted between d orbitals.

C.  Light is absorbed when electrons return to lower energy d orbitals.

D.  Light is emitted when electrons return to lower energy d orbitals.

[1]

Markscheme

A

Examiners report

About 70% of candidates selected the best explanation for the colour of d-block elements. The most commonly chosen distractor (D) indicates that a significant number of students believe that the elements emit light.

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