Rubidium and caesium
1 mark · NormalWhich statement best explains the trend in reactivity of Group 1 metals as you go down the group?
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Correct option: The outer electron is further from the nucleus and less strongly attracted.
Common mistakes: Choosing statement about protons; Selecting 'closer to nucleus'
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Marking points
A1 · 1 mark · Correct option selected: The outer electron is further from the nucleus and less strongly attracted.
Worked solution
The correct answer is: The outer electron is further from the nucleus and less strongly attracted.