MCQ
Which of the following compounds are diprotic
- A${H_2}P{O_5}$
- B${H_2}S$
- C$HCl{O_3}$
- ✓$(a)$ and $(b)$ both
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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