MCQ
When $KMnO _4$ react with any reductant, then $K _2 MnO _4$ will form. What will be its equivalent weight if molecular mass is (M)?
- ✓M
- B$M / 2$
- C$M / 5$
- D$M / 3$
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($A$) tetranuclear $\left[\mathrm{B}_4 \mathrm{O}_5(\mathrm{OH})_4\right]^{2-}$ unit
($B$) all boron atoms in the same plane
($C$) equal number of $s p^2$ and $s p^3$ hybridized boron atoms
($D$) one terminal hydroxide per boron atom