DP Chemistry (first assessment 2025)

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Question 22M.1A.SL.TZ1.8

Date	May 2022	Marks available	[Maximum mark: 1]	Reference code	22M.1A.SL.TZ1.8
Level	SL	Paper	1A	Time zone	TZ1
Command term	Identify	Question number	8	Adapted from	N/A

8.

[Maximum mark: 1]

22M.1A.SL.TZ1.8

Which of the following is the electron configuration of a metallic element?

A. [Ne] 3s² 3p²

B. [Ne] 3s² 3p⁴

C. [Ne] 3s² 3p⁶ 3d³ 4s²

D. [Ne] 3s² 3p⁶ 3d¹⁰ 4s² 4p⁵

[1]

Markscheme

C

Syllabus sections

Structure 3. Classification of matter » Structure 3.1—The periodic table: Classification of elements » Structure 3.1.2—The period number shows the outer energy level that is occupied by electrons. Elements in a group have a common number of valence electrons. Deduce the electron configuration of an atom up to Z = 36 from the element’s position in the periodic table and vice versa.

Structure 3. Classification of matter » Structure 3.1—The periodic table: Classification of elements » Structure 3.1.4—Trends in properties of elements down a group include the increasing metallic character of group 1 elements and decreasing non-metallic character of group 17 elements. Describe and explain the reactions of group 1 metals with water, and of group 17 elements with halide ions.