which is greader in size?
An atom or a cation.
11.) An atom or anion
fe+2 or fe+3
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Fe2+ is greater in size than Fe3+. ... This is because the outermost electron in the Fe2+ ion is pulled off to form Fe3+ ion. As the electrons are removed, it reduces the repulsion increasing nuclear charge experienced by each of the other d electrons and decreases the size of the ion.
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