Arrange the anions (p) overset-CH3,(q) overset-NH2,(r)OH-, (s)F- in decreasing order of their basic strength

Question

Arrange the anions (p) overset-CH3,(q) overset-NH2,(r)OH-, (s)F- in decreasing order of their basic strength (A) p > q > r > s (B) q > p > r > s (C) r > q > p > s (D) r > p > q > s

Tardigrade Admin · Accepted Answer

Strength of conjugate base propto (1/A c i d i c s t r e n g t h) As acidic strength is CH4 < NH3 < H2O < HF So conjugate base strength is CH3->NH2->OH->F-

Q. Arrange the anions $(p) C - H_{3}, (q) N - H_{2}, (r) O H^{-}, (s) F^{-}$ in decreasing order of their basic strength

p > q > r > s

q > p > r > s

r > q > p > s

r > p > q > s

$St re n g t h$ $o f$ $co nj ug a t e$ $ba se \propto \frac{1}{A c i d i c s t re n g t h}$
As acidic strength is $C H_{4} < N H_{3} < H_{2} O < H F$
So conjugate base strength is $C H_{3}^{-} > N H_{2}^{-} > O H^{-} > F^{-}$

Q. Arrange the anions (p)C−H3​,(q)N−H2​,(r)OH−,(s)F− in decreasing order of their basic strength