DP Chemistry (first assessment 2025)

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Question 21M.1A.SL.TZ1.9

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.1A.SL.TZ1.9
Level	SL	Paper	1A	Time zone	TZ1
Command term	Determine	Question number	9	Adapted from	N/A

9.

[Maximum mark: 1]

21M.1A.SL.TZ1.9

The Lewis structure of methylamine is shown.

What is the molecular geometry around N?

A. Square planar

B. Tetrahedral

C. Trigonal planar

D. Trigonal pyramidal

[1]

Markscheme

D

Syllabus sections

Structure 2. Models of bonding and structure » Structure 2.2—The covalent model » Structure 2.2.4—The valence shell electron pair repulsion (VSEPR) model enables the shapes of molecules to be predicted from the repulsion of electron domains around a central atom. Predict the electron domain geometry and the molecular geometry for species with up to four electron domains.