Which one of the following is correct with respect to basic character?

Which one of the following is correct with respect to basic character?
  1. $\mathrm{P}\left(\mathrm{CH}_3\right)_3>\mathrm{PH}_3$
  2. $\mathrm{PH}_3>\mathrm{P}\left(\mathrm{CH}_3\right)_3$
  3. $\mathrm{PH}_3>\mathrm{NH}_3$
  4. $\mathrm{PH}_3=\mathrm{NH}_3$

Solution

Due to $+\mathrm{I}$ effect of 3 methyl groups, the correct basic order is: $\mathrm{P}\left(\mathrm{CH}_3\right)_3>\mathrm{PH}_3$

Asked in: AP EAMCET 2015

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