Which of the following ions has the highest paramagnetism?

{[C r (H_{2} O)_{6}]}_{2}^{3 +}

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{[F e (H_{2} O)_{6}]}_{2}^{2 +}

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{[C o (H_{2} O)_{6}]}_{2}^{2 +}

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{[T i (H_{2} O)_{6}]}_{2}^{3 +}

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Solution

The correct option is B ${[F e (H_{2} O)_{6}]}_{2}^{2 +}$

Due to presence of most number of unpaired electrons in $F e^{2 +}$ , ${[F e (H_{2} O)_{6}]}_{2}^{2 +}$ is the most paramagnetic ion on the list.

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Similar questions

[T i (H_{2} O)_{6}]^{3 +}, [C r (H_{2} O)_{6}]^{2 +}, [F e (H_{2} O)_{6}]^{2 +}

[C o (H_{2} O)_{6}]^{2 +}

Amongst the following ions which one has the highest magnetic moment value?

(i) [Cr(H₂O)₆]³⁺

(ii) [Fe(H₂O)₆]²⁺

(iii) [Zn(H₂O)₆]²⁺

{[Z n {(H_{2} O)}_{4}]}^{2 +}, {[C r {(H_{2} O)}_{6}]}^{3 +}, {[F e {(H_{2} O)}_{6}]}^{3 +}, {[C u {(H_{2} O)}_{4}]}^{2 +}

[F e (C N)_{6}]^{3 -}

[F e (H_{2} O)_{6}]^{3 +}

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