Which of the following is not amphoteric ?

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$A l^{+ 3}$

$F e^{+ 3}$

$C r^{+ 3}$

$Z n^{+ 2}$

answer is B.

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Detailed Solution

Fe²⁺ is not an amphoteric ion. because it doesn't have the ability to react both will acids and bases. One get Fe³⁺ from Fe²⁺ but not get Fe⁺ from Fe²⁺.

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