\[MgA{{l}_{2}}{{O}_{4}}\], is found in the spinel structure in which \[{{O}^{2-}}\] ions constitute CCP lattice, \[M{{g}^{2+}}\] ions occupy l/8th of the tetrahedral voids and \[A{{l}^{3+}}\] ions occupy 1/2 of the octahedral voids. Find the total +ve charge contained in one unit cell.

\[MgA{{l}_{2}}{{O}_{4}}\], is found in the spinel structure in which \

1.	\[MgA{{l}_{2}}{{O}_{4}}\], is found in the spinel structure in which \[{{O}^{2-}}\] ions constitute CCP lattice, \[M{{g}^{2+}}\] ions occupy l/8th of the tetrahedral voids and \[A{{l}^{3+}}\] ions occupy 1/2 of the octahedral voids. Find the total +ve charge contained in one unit cell.
A.	+7/4 electronic charge
B.	+6 electronic charge
C.	+2 electronic charge
D.	+8 electronic charge
Answer» E.

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\[MgA{{l}_{2}}{{O}_{4}}\], is found in the spinel structure in which \[{{O}^{2-}}\] ions constitute CCP lattice, \[M{{g}^{2+}}\] ions occupy l/8th of the tetrahedral voids and \[A{{l}^{3+}}\] ions occupy 1/2 of the octahedral voids. Find the total +ve charge contained in one unit cell.

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