MCQ
The strongest base among the following is
- A

- B

- ✓

- D







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$(I)$ $BO_3^{-3} > CO_3^{-2} > NO_3^-$
$(II)$ $ClO_4^-> SO_4^{-2} > PO_4^{-3}$
$(III)$ $BF_3 > BCl_3 > BBr_3$
$(IV)$ $AlCl_3 > BCl_3$


| $Bond$ | $E_{(diss)}(kJ(mol )^{(-1)})$ |
| $C-A$ | $240$ |
| $C-B$ | $328$ |
| $C-C$ | $276$ |
| $C-D$ | $485$ |
${\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{ - 4}}\xrightarrow{{MnO_4^ - /{H^ + }}}F{e^{ + 3}} + C{O_2} + NO_3^ - $