Why bond angle of Phosphine `(PH_3)` is less than Ammonia `(NH_3)` ?

Aniline is less basic than ammonia

True of False: NH_3 is less basic than PH_3 .

Why ethylamine is more basic than ammonia

Although geometries of NH_(3) and H_(2)O molecules are distorted tetrahedral, bond angle in water is less than that of ammonia. Discuss.

Ethylamine is more basic than ammonia. Why ?

Ethylamine is more basic than ammonia. Why ?

Bond angle in (PH_4)^+ is higher than that in PH_3 . Why?

Bond angle in NH_4^+ is more than that in NH_3 .