BiH3 > SbH3 > NH3
H2O > HF > NH3
@ Suggestion..
the boiling points of these compounds are given in the NCERT...u may draw the graphs so that u can easily remember the trends...FIITJEE once gave such a question in FTSE i guess...it was a matrix match question and in column 1 we have some trends...and in column two there were graphs and we have to match the graph which represents that trend....
This is the thing abt which i was talking in post #4 ..
I hope it will be helpful [1]