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JEE Main2018ChemistryAminesActual

The increasing order of basicity of the following compounds is :

Options

  1. A(iv) < (ii) < (i) <(iii)
  2. B(i) < (ii) < (iii) < (iv)
  3. C(ii) < (i) < (iii) < (iv)
  4. D(ii) < (i) < (iv) < (iii)

Correct answer

D. (ii) < (i) < (iv) < (iii)

Step-by-step solution

Correct order should be : ii < i < iv < iii (i) N &#160; is &#160; sp 3 &#160; hybridised, 1 &#176; Amine without delocalization. (ii) N &#160; is &#160; sp 2 hybridised. (iii) Guanidine is a stronger base than amidine (resonance stabilised) (iv) 2 &#176; Amine, N &#160; is &#160; sp 3 hybridised.

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