DP Chemistry (last assessment 2024)

Question 22M.2.hl.TZ1.e(i)

Date	May 2022	Marks available	[Maximum mark: 1]	Reference code	22M.2.hl.TZ1.e(i)
Level	hl	Paper	2	Time zone	TZ1
Command term	State	Question number	e(i)	Adapted from	N/A

e(i).

[Maximum mark: 1]

22M.2.hl.TZ1.e(i)

When heated in air, magnesium ribbon reacts with oxygen to form magnesium oxide.

Most nitride ions are ¹⁴N^3–.

State the number of subatomic particles in this ion.

[1]

Markscheme

Protons: 7 AND Neutrons: 7 AND Electrons: 10 ✔

Examiners report

Stating the number of subatomic particles in a ¹⁴N^3- was done very well. However, some answers showed a lack of understanding of how to calculate the number of relevant subatomic particles given formula of an ion with charge and mass number.

Syllabus sections

Core

Core » Topic 2: Atomic structure » 2.1 The nuclear atom

Core » Topic 2: Atomic structure

Question 22M.2.hl.TZ1.e(i)

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