DP Chemistry (last assessment 2024)

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Question 19M.1.hl.TZ2.11

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1.hl.TZ2.11
Level hl Paper 1 Time zone TZ2
Command term Question number 11 Adapted from N/A
11.
[Maximum mark: 1]
19M.1.hl.TZ2.11

Which species has a square planar molecular geometry?

A. SF4

B. XeF4

C. CF4

D. PF4+

[1]

Markscheme

B

Examiners report

This was a highly discriminating question. 67 % of the candidates identified the species that has a square planar molecular geometry. One teacher commented that this was a difficult recall question. However, the intention here is not to memorize shapes but rather to use VSEPR theory to deduce the shape.

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