Question

Please answer this if you can

Answer 1

Answer:

(1. )NH3 ,(2). BeCl2 ,(3.) in h2o there are two lone oairs on oxygen while in ammonia there is only lone pair so due to more lone pair - lone pair repulsion in water it reduce its angle moreover lonepair - lone pair repulsion is much less in nh3 so its angle is less. , (4.) bf3 . ( i hope its hlep u)