Question detail

How does the electron arrangement of Group 1 elements affect their reactivity?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

The periodic table

Question

A. They readily lose one electron, making them highly reactive.
B. They are unreactive due to full outer shells.
C. They gain electrons to form negative ions.
D. They have no outer electrons.

Answer

The correct option is They readily lose one electron, making them highly reactive..

Explanation

The correct option is They readily lose one electron, making them highly reactive.. They readily lose one electron, making them highly reactive. is correct because it directly supports the approved learning objective to explain that Group 1 elements have one electron in their outer shell. This is tested in the subtopic Group 1 within The periodic table, so the reasoning must stay within AQA GCSE Chemistry 8462 Unit 4.1. The other options are weaker because they either confuse a nearby Chemistry concept, use the wrong subtopic context, or do not answer Group 1 precisely. Repair marker a541cb5d keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.

Common mistake

Misunderstanding Outer Electrons

Students often think that Group 1 elements have more than one outer electron.

Remember that Group 1 elements, such as lithium, sodium, and potassium, each have exactly one electron in their outer shell.

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