The transition element of III-B group which f | vedclass

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(C) Alums are double salts with the general formula $M_2(SO_4)_3 \cdot M'_2SO_4 \cdot 24H_2O$,where $M$ is a trivalent metal and $M'$ is a monovalent

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(C) Alums are double salts with the general formula $M_2(SO_4)_3 \cdot M'_2SO_4 \cdot 24H_2O$,where $M$ is a trivalent metal and $M'$ is a monovalent metal. $Sc^{3+}$ is a $d^0$ ion,meaning it has no unpaired electrons in its $d$-orbitals. Since $Sc^{3+}$ has a $d^0$ configuration,it does not undergo $d-d$ transitions. Therefore,the compound is colorless or white.

The transition element of $III-B$ group which forms an alum isomorphic with $Al_2(SO_4)_3 \cdot 18H_2O$ is $Sc$. The color of the compound $Sc_2(SO_4)_3 \cdot (NH_4)_2SO_4 \cdot 24H_2O$ is:

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