DP Chemistry (first assessment 2025)

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Question 21M.2.HL.TZ1.3b(i)

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.2.HL.TZ1.3b(i)
Level	HL	Paper	2	Time zone	TZ1
Command term	State	Question number	b(i)	Adapted from	N/A

b(i).

[Maximum mark: 1]

21M.2.HL.TZ1.3b(i)

(b(i))

State the type of spectroscopy that could be used to determine their relative abundances.

[1]

Markscheme

mass «spectroscopy»/MS ✔

Syllabus sections

Structure 1. Models of the particulate nature of matter » Structure 1.2—The nuclear atom » Structure 1.2.3—Mass spectra. Mass spectra are used to determine the relative atomic masses of elements from their isotopic composition. Interpret mass spectra in terms of identity and relative abundance of isotopes.