Which one is a pseudo alum

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Question

Alum $\mathrm{M}_{2} \mathrm{SO}_{4}\,\, \,\mathrm{M}_{2}^{\prime}\left(\mathrm{SO}_{4}\right)_{3} \cdot 24 \mathrm{H}_{2} \mathrm{O}$

here $M=M^{+}$

Vedclass · Accepted Answer

$MnSO_4.Al_2(SO_4)_3.24H_2O$

Vedclass · Answer

Alum $\mathrm{M}_{2} \mathrm{SO}_{4}\,\, \,\mathrm{M}_{2}^{\prime}\left(\mathrm{SO}_{4}ight)_{3} \cdot 24 \mathrm{H}_{2} \mathrm{O}$

here $M=M^{+}$ monovalent

$M^{\prime}=M^{+2} 	ext { divalent }$

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