Question:
A crystal is made up of metal ions ' $\mathrm{M}_{1}$ ' and ' $\mathrm{M}_{2}$ ' and oxide ions. Oxide ions. form a $c c p$ lattice structure. The cation ' $\mathrm{M}_{1}$ ' occpies $50 \%$ of octahedral voids and the cation ' $\mathrm{M}_{2}$ ' occupies $12.5 \%$ of tetrahedral voids of oxide lattice. The oxidation numbers of ' $\mathrm{M}_{1}$ ' and ' $\mathrm{M}_{2}$ ' are, respectively:
Correct Option: 1
Solution:
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