Question detail
Explain why the reactivity of Group 1 elements increases as you move down the group.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
The periodic table
Question
Explain why the reactivity of Group 1 elements increases as you move down the group.
Answer
The reactivity of Group 1 elements increases down the group because the outer electron is further from the nucleus, resulting in a weaker attraction between the nucleus and the outer electron. This makes it easier for the outer electron to be lost during chemical reactions.
Explanation
This answer is strong because it clearly connects the concept of atomic structure (distance of the outer electron from the nucleus) to the observed trend in reactivity. The question tests the student's understanding of the relationship between atomic structure and chemical properties in Group 1 elements.
Common mistake
Reactivity Misunderstanding
Students often believe that reactivity increases down Group 1 because the elements become heavier.
Reactivity increases down Group 1 due to the increasing distance of the outer electron from the nucleus, which makes it easier to lose that electron.
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