MCQ
Which of the following base is weakest :
- ✓$Cl ^{-}$
- B$HCO _3^{-}$
- C$OH ^{-}$
- D$H ^{-}$
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Given : Mass of electrons $=9.1 \times 10^{-31}\, \mathrm{~kg}$
Charge on an electron $=1.6 \times 10^{-19}\, \mathrm{C}$
Planck's constant $=6.63 \times 10^{-34\,} \mathrm{Js}$