Which of the following have highest ionic radii

C r^{3 +}

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M n^{3 +}

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F e^{3 +}

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C o^{3 +}

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Solution

The correct option is A $C r^{3 +}$
Ionic radii $\propto \frac{1}{a t . n o .}$

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Similar questions

Q. Which one of the following ions has an electronic configuration of

[A r] 3 d^{6}

(A t o m i c N u m b e r : M n = 25, F e = 26, C o = 27, N i = 28)

Q. Which of the following have highest ionic radii

Q. Which have he following ion have highest ionic density?

While $F e^{3 +}$ is stable, $M n^{3 +}$ is not stabe in acid solution because:
$(M n^{3 +} + e^{-} \to M n^{2 +}, E^{\circ} = 1.5 V; O_{2} + 4 H^{+} + 4 e^{-} \to 2 H_{2} O, E^{\circ} = + 1.23 V; F e^{3 +} + e^{-} \to F e^{2 +}, E^{\circ} = 0.77 V)$

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Which of the following have highest ionic radii

The correct option is A Cr3+Ionic radii ∝1at. no.

The correct option is A $C r^{3 +}$
Ionic radii $\propto \frac{1}{a t . n o .}$