Which of the following species will be the strongest Lewis acid?

{F e}^{0}

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{F e}^{3 +}

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{F e}^{2 +}

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{F e}^{+}

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Solution

The correct option is A ${F e}^{3 +}$
Electron deficient species are considered as lewis acids.
electron-rich species are considered as lewis bases.
More is the positive charge more is electron deficiency so more is its acidity. So strongest acid is $F e^{+ 3}$ .
Hence option B is correct.

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Similar questions

F e | F e^{2 +} | | F e^{3 +} | F e

F e | F e^{2 +} | | F e^{3 +}, F e^{2 +} | P t

F e | F e^{3 +} | | F e^{3 +}, F e^{2 +} | P t

E_{F e^{2 +} / F e}^{+}

x_{1}

E_{F e^{3 +} / F e}^{+}

x_{2}

E_{F e^{+} / F e^{2 +}}^{+}

F e O_{4}^{2 -} E^{o} = + 2.20 V - ------ \to F e^{3 +} E^{o} = 0.77 V - ----- \to F e^{2 +} F e^{2 +} E^{o} = 0.445 V - ------ \to F e^{0}

E_{F e O_{4}^{2 -} / F e^{2 +}}^{o}

F e^{2 +} + 2 H^{+} + N O_{3}^{-} \to F e^{3 +} + N O_{2} + H_{2} O

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