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SAT Chemistry

Category - True or False

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Fe³⁺has a larger ionic radius than Fe²⁺. True or False?

True
False

Explanation

Answer: False

The statement is false. Fe³⁺ has one less electron than Fe²⁺, but the same number of protons in the nucleus. Therefore, the remaining electrons in Fe³⁺ will be held more tightly to the nucleus than the electrons in Fe²⁺. Thus, Fe²⁺ has a larger ionic radius than Fe³⁺.

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