Q84 / 160 · JIPMER 2010 · Chemistry

Which of the following is a Lewis acid?

  • A
    $\mathrm{OH}^{-}$
  • Correct answer
    B
    $\mathrm{H}^{+}$
  • C
    $\mathrm{F}^{-}$
  • D
    $\mathrm{NH}_3$

Solution

$\mathrm{OH}^{-}, \mathrm{F}^{-}$and $\mathrm{NH}_3$ are Lewis base because they can donate a lone pair of electrons while $\mathrm{H}^{+}$is a Lewis acid because it can accept a lone pair of electrons.

Hence, the correct answer is option: 'B'.

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