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The table below gives the energy required to remove the outermost electron for some group I elements.

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asked Aug 30, 2021 in Chemistry Form 2 by anony mous

The table below gives the energy required to remove the outermost electron for some group I elements.

Element	I	II	III	IV
Ionization Energy kJmol-1	494	418	519	376

Arrange the elements in order of their reactivity starting with the most reactive.

structure of the atom and the periodic table
chemical families patterns in properties

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answered Aug 30, 2021 by anony mous

IV, II, I, III
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