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Q.

Which one is yellow in aqueous state
Cr3+ 2) Mn3+ 3) Fe3+ 4) Ti3+

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a

Mn3+ 

b

Cr3+

c

Ti3+

d

Fe3+

answer is C.

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Detailed Solution

Because [Fe(H2O)6]3+ is capable of donating a proton, the conjugate base , [Fe(H2O)5OH]2+ is generally present when Fe3+ is dissolved in water. This imparts a yellow color to the solution.

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