DP Chemistry (last assessment 2024)

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Question 22M.2.sl.TZ2.2b(ii)

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.2.sl.TZ2.2b(ii)
Level sl Paper 2 Time zone TZ2
Command term Draw, Label Question number b(ii) Adapted from N/A
b(ii).
[Maximum mark: 1]
22M.2.sl.TZ2.2b(ii)

Electrons are arranged in energy levels around the nucleus of an atom.

The diagram represents possible electron energy levels in a hydrogen atom.

(b(ii))

Draw an arrow, labelled X, to represent the electron transition for the ionization of a hydrogen atom in the ground state.

[1]

Markscheme

upward arrow X AND starting at n = 1 extending to n = ∞ ✔

Examiners report

Only 30% of the candidates drew the correct arrow on the diagram representing the ionization of hydrogen. A few candidates missed the mark by having the arrow pointing downwards. The most common incorrect answer was a transition between n=1 and n=2.

Syllabus sections