Why Zn+2 is diamagnetic whereas Cr+3 is paramagnetic

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Solution

Dear Student

Zn²⁺ has an outer configuration of [Ar]₁₈ 4s⁰ 3d¹⁰ , where all the electrons are paired up hence it is diamagnetic.

Cr³⁺ has a configuration of [Ar}₁₈ 4s⁰ 3d³ where there are 3 unpaired electrons so it will exhibit paramagnetism.

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