Q4 / 225 · JEE Main 2003 · Chemistry

The correct order of increasing basic nature for the bases $\mathrm{NH}_3, \mathrm{CH}_3 \mathrm{NH}_2$ and $\left(\mathrm{CH}_3\right)_2 \mathrm{NH}$ is

  • A
    $\left(\mathrm{CH}_3\right)_2 \mathrm{NH} < \mathrm{NH}_3 < \mathrm{CH}_3 \mathrm{NH}_2$
  • Correct answer
    B
    $\mathrm{NH}_3 < \mathrm{CH}_3 \mathrm{NH}_2 < \left(\mathrm{CH}_3\right)_2 \mathrm{NH}$
  • C
    $\mathrm{CH}_3 \mathrm{NH}_2 < \left(\mathrm{CH}_3\right)_2 \mathrm{NH} < \mathrm{NH}_3$
  • D
    $\mathrm{CH}_3 \mathrm{NH}_2 < \mathrm{NH}_3 < \left(\mathrm{CH}_3\right)_2 \mathrm{NH}$

Solution

More is the no . of $+\mathrm{I}$ groups attached to $\mathrm{N}$ atom greater is the basic character.

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

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