DP Physics (first assessment 2025)

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Question 22M.1A.SL.TZ1.27

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ1.27
Level SL Paper 1A Time zone TZ1
Command term Question number 27 Adapted from N/A
27.
[Maximum mark: 1]
22M.1A.SL.TZ1.27

U92238 undergoes an alpha decay, followed by a beta-minus decay. What is the number of protons and neutrons in the resulting nuclide?

[1]

Markscheme

C

Examiners report

This question was generally well answered by candidates, however a significant number selected option A (incorrectly) perhaps due to confusion between nuclear mass and the number of neutrons. This question had a relatively high discrimination index.

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