DP Chemistry (last assessment 2024)

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Question 19M.1.sl.TZ2.7

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1.sl.TZ2.7
Level sl Paper 1 Time zone TZ2
Command term Question number 7 Adapted from N/A
7.
[Maximum mark: 1]
19M.1.sl.TZ2.7

Which of the following would have the same numerical value for all elements in the same period?

A. Highest energy levels occupied

B. Energy sub-levels occupied

C. Orbitals occupied

D. Valence electrons

[1]

Markscheme

A

Examiners report

A challenging question with a high discrimination index. 46 % of the candidates chose the correct answer A (the highest energy levels occupied have the same numerical value for all elements in the same period). A high proportion of candidates chose C (orbitals occupied have the same value ….) and a significant proportion chose B (energy sub-levels occupied have the same value …).

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