Which of the following ions does not exhibit | vedclass

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(D) An acidic species must be able to donate a proton $(H^+)$. $1$. $[Al(H_2O)_6]^{+3}$ acts as a Lewis acid and can release $H^+$ from coordinated wa

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$ClO_4^-$

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(D) An acidic species must be able to donate a proton $(H^+)$. $1$. $[Al(H_2O)_6]^{+3}$ acts as a Lewis acid and can release $H^+$ from coordinated water molecules. $2$. $[Fe(H_2O)_6]^{+3}$ also acts as a Lewis acid and can release $H^+$. $3$. $HPO_4^{-2}$ is amphoteric and can donate a proton to form $PO_4^{-3}$. $4$. $ClO_4^-$ is the conjugate base of a strong acid $(HClO_4)$. Since $HClO_4$ is a very strong acid,its conjugate base $ClO_4^-$ has negligible basicity and no acidic properties as it cannot donate a proton.

Which of the following ions does not exhibit acidic properties?

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