Correct order of basic strengths of given amines is :

Options

A. `{:(Me_(2)NH gt MeNH_(2) gt Me_(3)N gt NH_(3)("Protric solvent")),(" "2^(@)" "1^(@)" "3^(@)):}`
B. `{:(Et_(2)NH gt Et_(3)H gt EtNH_(2) gt NH_(3)("Protic solvent")),(" "2^(@)" "3^(@)" "1^(@)):}`
C. `MeNgtMe_(2)NHgtMe-NH_(2)gtNH_(3)` (Gas phae )
D. All are correct

Answer

D

Explanation

`{:(Me_(2)NHgtMeNH_(2)gtMe_(3)NgtNH_(3)),(" "2^(@)" "1^(@)" "2^(@)):}` if (R=-Me or Butly) (in polar protic solvent )
(b) `2^(@)gt3^(@)gt1^(@)gtNH_(3)` if (R=Et)
(c) `3^(@)gt2^(@)gt1^(@)gtNH_(3)` (Gas phase )