DP Chemistry (last assessment 2024)

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Question 22N.1.hl.TZ0.10

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1.hl.TZ0.10
Level hl Paper 1 Time zone TZ0
Command term Identify Question number 10 Adapted from N/A
10.
[Maximum mark: 1]
22N.1.hl.TZ0.10

Which elements are capable of forming expanded octets?

I.   Nitrogen
II.  Phosphorus
III. Arsenic


A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

[1]

Markscheme

C

Examiners report

Only about 60% of candidates were aware that nitrogen cannot expand its octet, unlike other elements in Group 15. There were quite a lot of teacher comments mainly regarding the inclusion of arsenic, but the critical factor did not require any knowledge of this.

Syllabus sections