DP Chemistry (first assessment 2025)

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Question SPM.1A.HL.TZ0.13

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.HL.TZ0.13
Level HL Paper 1A Time zone TZ0
Command term Question number 13 Adapted from N/A
13.
[Maximum mark: 1]
SPM.1A.HL.TZ0.13

Why is copper(II) sulfate blue?


A.  Red light is absorbed when electrons are promoted between the orbitals in the split d-sublevels.

B.  Blue light is emitted when electrons fall between the orbitals in the split d-sublevels.

C.  Red light is absorbed when electrons fall between the orbitals in the split d-sublevels.

D.  Blue light is emitted when electrons are promoted between the orbitals in the split d-sublevels.

[1]

Markscheme

A